Put this on your keys so you never lose it! Have dual air valves on your wheels? Use this small hand held keychain tire gauge while you fill your tires with air or nitrogen. Put the air on one side and the gauge on the other for an accurate reading.
I always have sunglasses that need cleaning! I keep this in my center console to clean my sunglasses, clean my phone screen and camera, and to clean all my glossy components that my hands touch inside and outside my ride.