The hidden loop on a seatbelt is often overlooked, but it's designed to serve as a guide for the seatbelt tongue, making it easier to buckle up. Have you ever noticed the arrow next to the fuel gauge on your car? It indicates which side the fuel door is on, a handy detail many drivers miss. Check the little bumps on the "F" and "J" keys on your keyboard – they help you find the home row without looking. Ever wondered why your takeaway coffee lids have that little tab? It's designed to prevent the steam from getting trapped and creating a messy splatter.

Learn more about your ad choices. Visit megaphone.fm/adchoices