It's so small you'll barely notice it on your keychain, but the 2.4" KL20R Rechargeable Keychain Light from Coast is a big help in the dark. A double-click of its push-button switch kicks on 380 lumens of white light in the turbo mode—just right when trying to find a keyhole or retrieve an item from between the car seats or deep in your bag. Plug into the KL20R's USB-C port to recharge; runtime ranges from 2 hours on high to 6.5 hours on the 50-lumen low power setting. A split ring is included for adding the light to your keyring, the lanyard inside a travel bag, or just about anywhere else.