Plastic Cup Lids
Aside from their obvious purpose at keeping the liquid inside of cups, those plastic lids do a couple of other things. If you take the lid off and flip it over, the cup snaps perfectly into place and has a built-in coaster. Protect your furniture from that to-go condensation.
Toothpaste Stripes
Toothpastes like Aquafresh have that classic tri-colored look that all serve different purposes in dental hygiene. The blue stripe is responsible for refreshing, and red is in charge of plaque control. Though whether or not it cleans better overall than other toothpastes isn't necessarily proven.