LED flashlight keychain

thingiverse

Tiny LED Keychain: Your Life Saver in Dark Situations! Just clip it onto your keys and you're all set to go! I took it up a notch by incorporating 2 LEDs for an extra burst of brightness. This little gem runs on one CR2032 battery, which can be swiftly swapped out by pushing the bottom hole with a paperclip. As soon as you do that, the button will disconnect from the keychain, giving you easy access to replace the battery. Don't forget to read through the building instructions!