This list contains everyday things that people tend to use incorrectly. Find out more about their unique and correct purposes and learn to use them properly.

A hole in the ballpoint pen lid

Image

Do you think that it can keep your pen from getting dry? Can it keep the right pressure balance to prevent your pen from leaking? Its purpose is to reduce a suffocation risk, especially among kids. If they chew and choke on it, this hole keeps airways from being closed entirely.

Small holes in airplane windows

Image

They prevent windows from being fogged while compensating for the necessary air pressure. There is some considerable pressure difference outside and inside of airplanes, and these holes regulate it.

Extra fabric pieces

Image

They always come with new clothing, and they serve as material samples to test the reaction of laundry detergents on your new outfits.

Small pockets on jeans

Image

They date back to the earliest jeans designs, and their basic purpose is to keep a pocket watch, so it definitely shows its age.

Studs on jeans

Image

They date back to the first pair of jeans made by Levi Strauss. Many laborers chose jeans as their perfect work pants, and studs reinforced their seams in the areas that dealt with a lot of regular tear and wear.

Small holes in shoes

Image

The basic purpose that they serve is proper ventilation, so everything is quite obvious. Converse All Stars were designed as basketball footwear at first, so it was possible to loop laces through these holes to create a snug fit.

Small holes on a tape measure end

Image

Do you know what it is for? It’s designed to hook on screws and nails to let users measure safely with no accidental tape slipping.

Little serrated edges

Image

Imagine a situation where it’s necessary to mark where measurements are, but you can’t do it simply because both of your hands are busy with a tape measure. This is when little serrated edges really come in handy!

Holes in your pot handles

Image

Actually, they are useful for different reasons. The key one is that holes allow you to hang up pots. If you need to put a cooking spoon somewhere, don’t forget this handy spot.

Arrows next to a gas gauge

Image

Some people don’t notice this little arrow at all, but it’s a very useful and convenient feature on all cars, especially when driving the rental one. It’s there to indicate drivers the right side of their vehicle on which is a gas cap is placed.