1

Tin can tab holes

Image: frame harirak

The tab on a tin can, which we use to open it, has two holes—one smaller than the other. If you turn the tab around and place the smaller hole over the can’s opening, you can slide a straw through it , keeping it in place.

2

F and J bumps on keyboards

Image: Jan Loyde Cabrera

Have you ever noticed the small bumps on the F and J keys of every computer keyboard? These bumps are tactile information that lets you know where your fingers are placed on the keyboard without having to look at them.

3

Pasta scoop holes

Image: María Sainz Cabezalí

Most people think the hole in the middle of a pasta scoop is just a strainer for draining excess water. While it does serve that purpose, it is actually designed to measure a single serving of spaghetti .

4

Oven under drawer

Image: Andrea Davis

The drawer beneath an oven is designed to keep food warm without cooking it further. In some models, it functions as a broiler drawer , it can be used for grating cheese. A heating element above the drawer allows for high-heat cooking.

5

Extra fabric

Image: PlanetCare

Some clothing items come with a small piece of extra fabric, matching the garment's material. This fabric isn’t meant as a patch for repairs but rather for testing in the washing machine , allowing you to check how it reacts to different wash cycles before laundering the entire garment.

6

Pan handle hole

Image: Mara Conan Design

The hole at the end of most pan handles is designed to hold a wooden spoon , preventing messes on the kitchen counter. Simply slide the handle of the wooden spoon into the hole, letting the spoon rest over the pan when not in use.

7

Toaster crumb tray

Image: Daniel Salgado

Hidden away at the bottom of your toaster’s side is a small removable tray designed to catch and collect crumbs . You can slide it out to dispose of the crumbs and slide it back in for easy cleanup.

8

Marker on laundry detergent’s bottle cap

Image: Julianna Arjes

Most people who do laundry know that the bottle cap on laundry detergent is used to pour the liquid into the washing machine. However, not everyone notices that these caps have markings inside to measure the correct amount of detergent for a single wash cycle.

9

Utility knife blade replacement

Image: ds_30

When your utility knife blade starts to show signs of wear, you can break off the end segment to reveal a fresh, sharp edge . To do this, remove the detachable plastic piece from the back of the knife. This piece has a small slot where you can insert the blade’s end segment and snap it off safely. Once done, simply reattach the plastic piece, and your knife is ready to use again.

10

Color thread on wheel tire

Image: Jaye Haych

Many tire manufacturers embed colored threads near the outer edge of tires to indicate when they need to be replaced. These thread lines help measure tread depth . When the tread wears down to the level of these colored lines, it signals that the tire is approaching the end of its usable life and may need to be replaced.

11

Pint glass bulge

Image: tito pixel

If you've ever wondered what the bulging part on the sides of a pint glass is for—besides aesthetics—the answer can be found in bars and pubs everywhere. When glasses are stacked, they can sometimes get stuck together . However, pint glasses with a bulging design prevent this from happening .

12

Tic Tac dispenser

Image: jarmoluk

Tic Tac containers have an oval-shaped indentation in the lid, where a single Tic Tac can fit snuggly . This design functions as a dispenser for individual servings. Instead of shaking the container like a salt shaker, simply tilt it on its side, open the lid slowly, and a single candy will appear on it.

1

The spacesuit satellite

Image: Sieuwert Otterloo

Shoving an astronaut suit out of an airlock and into space might seem like a scene from a movie, but it really happened. In 2003, an empty spacesuit was thrown into space , nicknamed Ivan Ivanovitch (or Mr. Smith), stuffed with old clothes and a radio transmitter .

The idea was that old spacesuits could be used as satellites. SuitSat-1, as it was named, went on to spend several months in silent orbit before entering Earth's atmosphere and burning up on September 7, 2006.

2

The "invisible" gorilla

Image: Mike Arney

In this strange psychological experiment, researchers asked participants to watch a video of people passing a basketball and count how many passes were made. The catch was that, during the video, a person in a gorilla suit walked into the frame, stopped to pound its chest, and then walked out.

The study revealed a curious phenomenon known as "inattentional blindness": people were so focused on counting the passes that they failed to notice the gorilla .

3

Space spiders

Image: Vidar Nordli-Mathisen

In 2011, scientists sent two golden silk orb-weaver spiders on a 45-day trip aboard the ISS. They were kept in an adequate habitat, and both spiders adapted beautifully, continuing to spin their webs and hunt for food.

But not everything was normal. In microgravity, the spiders spun their webs differently —flatter and rounder—compared to the more three-dimensional, asymmetrical structures that orb-weavers spin on Earth.

4

Bitter fingernails

Image: Nick Karvounis

In 1942, a professor conducted an experiment with boys who had been diagnosed as chronic nail-biters. He used a phonograph with the recorded message " My fingernails taste bitter ," playing it over and over at night in the room where the boys slept.

At the end of the summer, the professor examined the boys' nails and concluded that 40% of them had kicked the habit.

5

Syrup swimming

Image: Arwin Neil Baichoo

In 2004, sixteen people with varying swimming skills swam in both a regular pool and a pool of guar syrup , which is twice as thick as water, for an experiment conducted by the University of Minnesota. The differences in their recorded times were negligible.

6

Bearcats and popcorn

Image: Corina Rainer

People encountering bearcats have noted that these animals smell like movie theater popcorn. A non-profit organization tested the bearcat's urine , and the results showed the presence of a chemical compound called 2-acetyl-1-pyrroline.

As it turns out, this is the same compound that gives popcorn its signature smell .

7

The 28-hour day

Image: Ocean Ng

Hoping to find out whether the 24-hour sleep-wake human rhythm was merely a habit, two scientists spent 32 days in a cave to avoid any external reference to day and night.

They tried out a 28-hour day, sleeping for 9 hours, working for 10 hours, and having 9 hours of leisure time . The younger scientist adapted within the first week, while the older one failed to adapt.

8

The fake doctor

Image: Hunters Race

A fake doctor delivered a lecture in 1970 to a crowd of assembled experts titled "Mathematical Game Theory as Applied to Physician Education." His performance impressed the audience so much that nobody noticed he was an actor who didn’t know anything about game theory.

The researchers behind the experiment wanted to find out if a great delivery technique could fool a group of experts—and it did.

9

The electric kite

Image: Brett Wharton

The most famous experiment on our list is also one of the strangest. In 1752, Benjamin Franklin flew a kite in a thunderstorm to demonstrate the electrical nature of lightning .

While many believe otherwise, no lightning hit the kite. Instead, ambient electrical charge moved through the hemp wire, and when Franklin touched the key attached to the wire, he felt a spark, thus proving the existence of such electricity.

10

Moon trees

Image: David Dibert

As we've learned, Americans like taking things to outer space and then bringing them right back. The Apollo 14 mission carried hundreds of tree seeds into space . These "moon trees" were then planted across the country by the US Forest Service.

Unsurprisingly, the trees grew just like any other tree of the same species.

1

Smoked mackerel & leek hash

Image: Denis Agati

If you have 250 grams of potatoes, two large leeks, a can of smoked mackerel, and four eggs , you can make this delicious dish.

Cook the potatoes in the microwave for five minutes. Meanwhile, heat some oil in a frying pan over medium heat, add the leeks with a pinch of salt, and cook for 10 minutes. Add the potatoes, increase the heat, and fry for a couple of minutes. Flake the mackerel into the pan. Make four indents in the leek mixture, crack an egg into each, then cover the pan and cook for 6–8 minutes, until the whites have set and the yolks remain runny.

2

Cacio e pepe

Image: Immo Wegmann

You probably have a packet of dried spaghetti in your pantry. For this recipe, you’ll need 200 grams of spaghetti , 25 grams of butter , 50 grams of finely grated pecorino or parmesan cheese , and some black pepper .

Cook the pasta for 2 minutes less than the package instructions indicate. Meanwhile, melt the butter in a medium frying pan over low heat, add the ground black pepper, and toast for a few minutes. Transfer the pasta to the pan along with 100 ml of pasta water. Toss briefly, then evenly sprinkle the cheese over the pasta—but don’t stir. Let the cheese melt for 30 seconds, then toss everything together and stir until well combined.

3

Peanut butter & jam flapjacks

Image: Towfiqu barbhuiya

Peanut butter and jelly have saved the day more than once, and they do it again in this simple recipe. You’ll need 5 tablespoons of salted butter , 250 grams of peanut butter , 8 tablespoons of strawberry or raspberry jam , and 200 grams of rolled oats .

Preheat the oven, butter a 20 cm square cake tin, and line the base and sides with baking parchment. Put 3 tablespoons each of the peanut butter and jam in separate small bowls and set aside. Put the remaining peanut butter, the rest of the jam, and the butter and sugar into a pan set over medium heat and stir. Add the oats, then leave to cool for 5 minutes. Transfer it to the prepared cake tin and gently press it down with your hands. Dot the reserved peanut butter and jam over the top, then bake for 20–25 minutes.

4

Caramelized banana & chocolate pie

Image: Mike Dorner

This is a great dessert to improvise if you have three bananas , 70 grams of hazelnuts , 150 grams of dark chocolate , a 500-gram block of puff pastry , and three tablespoons of brown sugar .

Preheat the oven. Process the hazelnuts in a small food processor, then transfer them to a bowl with the chocolate. Roll out the pastry into a 30 cm circle on a sheet of baking parchment. Sprinkle the chocolate and hazelnut mixture evenly over the pastry, leaving a 5 cm border. Arrange the bananas on top and scatter most of the remaining hazelnuts over them. Fold the pastry edges over the filling. Transfer the pie, along with the baking parchment, to a baking sheet and chill in the fridge for at least 10 minutes. Bake for 25–30 minutes.

5

Garlic chicken parcels

Image: Claudio Schwarz

You will need two chicken breasts , a 320-gram sheet of all-butter puff pastry , 150 grams of garlic and herb cream cheese , half a lemon , and 200 grams of green beans and broccoli .

Heat the oven. Cut a slit halfway into each chicken breast, then place each one between two sheets of baking parchment and flatten slightly with a rolling pin. Cut the pastry sheet in half widthwise and place both halves on a baking tray. Place a chicken breast on top of each pastry half, then fill the cavities with the cream cheese. Sprinkle with lemon zest, then fold the edges of the pastry over the chicken and pinch to seal. Flip each parcel over so the seam is on the bottom. Then bake for 30 minutes until deep golden. About 10 minutes before your parcels are ready, steam or boil the greens until tender. Toss with a little oil, season, and serve.

6

Red pepper linguine

Image: amirali mirhashemian

The second pasta recipe on our list requires one roasted red pepper , a bit of olive oil , 50 grams of walnuts , a small garlic clove , 100 grams of spaghetti or linguine , and some parmesan cheese .

In a food processor, blend the roasted red pepper with the olive oil, walnuts, and garlic until smooth. Season well and set aside. Bring a pot of salted water to a boil, add the pasta, and cook for 1 minute less than the package instructions indicate. Drain, reserving a bit of the cooking water. Return the pasta to the pan, add the reserved cooking water and red pepper sauce, and warm through over low heat. Serve in a bowl, topped with parmesan and some chopped toasted walnuts.

7

Creamy tomato courgetti

Image: Caroline Attwood

The original recipe calls for Parma ham, but any ham you have in your fridge will do. You will need four slices of ham , half a pack of basil , 350 grams of tomato and mascarpone sauce , and a 250-gram pack of courgetti .

Tear the ham and basil into coarse pieces. Heat a frying pan over medium heat and dry-fry the ham until crisp. Transfer the ham and basil to a plate, then add the sauce to the same pan. Cook for 1–2 minutes, then stir in the courgetti. Cook for 1 more minute until warmed through. Divide between bowls and top with the ham and basil.

8

Jerk prawn & coconut rice bowls

Image: blackieshoot

If you have a 150-gram pack of peeled prawns , a bit of jerk seasoning , a 400-gram can of kidney beans in chili sauce , and a 250-gram pouch of ready-cooked coconut rice , you can make this quick and flavorful dish.

Heat a bit of oil in a large frying pan, add the prawns and jerk seasoning, and cook for two minutes. Drain the beans, reserving three tablespoons of the chili sauce. Add the beans to the pan along with the reserved sauce and coconut rice. Fry for 3–4 minutes, then season with salt to taste.

9

Sweet potatoes with mushrooms & rosemary

Image: Louis Hansel

If you have sweet potatoes lying around and aren’t sure what to make, here’s an idea. You’ll need two sweet potatoes , 200 grams of halved chestnut mushrooms , a bit of freshly chopped rosemary , and some Parmesan cheese .

Preheat the oven. Prick the sweet potatoes several times with a fork, then microwave them for 8–10 minutes until tender. Meanwhile, heat a bit of oil in a non-stick pan, add the mushrooms and rosemary, and cook over medium-high heat, stirring, until the mushrooms are tender and lightly browned. Season to taste. Transfer the potatoes to the oven and roast for 15 minutes until the skins start to crisp. Split them open, top with the mushrooms, and sprinkle with Parmesan before serving.

10

Sweet chili dogs

Image: American Heritage Chocolate

Who doesn’t love hot dogs? Or chili? This extra-simple recipe combines both. You’ll need four fat sausages , two onions , a bit of chili sauce , four hot dog buns , and two tablespoons of tomato purée .

Preheat the oven. Place the sausages in a roasting tin and cook for 20–25 minutes, turning occasionally, until golden and cooked through. Meanwhile, fry the onions in a bit of oil until softened. Stir in the chili sauce and tomato purée, season to taste, and cook for 1 minute more. Split the hot dog buns, add a spoonful of the sweet chili onions, place a sausage in each, then top with another spoonful of onions. Enjoy!