Solar-Rechargeable Light
Solio Clip-Mini
$35, 3.5 oz.
solio.com
File this under “very cool.” This LED light recharges using either solar power or a USB cord, eliminating the need to throw away batteries. It recharges in six hours on sunlight or one hour via the USB connection—so a day on the trail with the Clip-Mini attached to your pack (via its convenient, big carabiner clip) juices up the lithium-polymer battery completely.