Bottle Cap Discs
If you look underneath a soda bottle cap, you will see a plastic disc. There is more to it than meets the eye. It is actually helpful when it comes to carbonation. We are not sure about the science that goes into it, but the disc basically traps the fizz or carbon dioxide inside the container. Flat soda sucks, after all.
Rearview Mirror Tab
When you drive, it is your responsibility to look in the rearview mirror often. Yes, this applies even when you are blinded by the headlights from behind your car. When this happens, you can use the tab at the bottom of the mirror to adjust its position. This will deflect the light and let you see what is happening.