A Soda Tab’s Holes
The tab in a can of soda has two holes. One is to help you grab the tab and open the can. The other hole is for you to stick your straw through it so that it stays in place when you’re not drinking. Otherwise, the gasses will cause your straw to float to the top and pop out.
A Grocery Cart’s Frame Loops
The top fold out section on grocery carts has loops that allow you to hang your light bags. That way, items like bread and eggs won’t get crushed under the weight of the bags that are holding heavy items like milk and shampoo bottles. But most people, including supermarket employees have no idea that this design feature is there for a reason.
