The Fenix E03R V2.0 is one of the smallest rechargeable flashlights you can put on a keyring — and one of the most surprising. Squeezed into a CNC-machined, full-metal body just 2 inches long, it throws a bright 500-lumen beam nearly 300 feet (90 meters), the kind of output you'd expect from something twice its size. A USB Type-C port and 400mAh battery keep it charged and ready, with an LED indicator so you always know where it stands, and an IP66 rating means splashes and dust are a non-issue.

This tiny rechargeable flashlight is tough, genuinely useful, and small enough to disappear until the exact moment you need it — which makes it as good a gift as it is a daily carry.