The lines on the plastic solo cups are to measure a serving size.

You have most likely used the wrong plunger for a toilet. The toilet plunger has a cup with a soft flap.

To add a new key to your keychain, use a staple remover. Wedge it between the coils and it will be easier to slide your new key on.

Never noticed the gas cap holder until just now.

The blue button on hairdryers isn’t meant for cooling, it’s for setting your hairstyles.

Travel pillows actually go in front.

Two-sided cotton pads are for different uses. The soft side is for removing makeup. The embossed side is for removing nail polish.

Long sugar packets should be broken in half above the cup. It’s easier to get the sugar out and you won’t have little pieces of paper flying all around.

You can turn those rectangular Chinese takeout boxes into plates.

The shopping carts’ loops are for hanging bags after you pass the checkout. This is to give you more space inside the cart.

The hole at the bottom of a padlock is to pour oil in case the lock gets stuck.

This is the proper way to store your mac charger.