Logitech just unveiled a solar keyboard that could last 10 years without charging

Logitech unveils the Signature Slim Solar+ K980, a light-powered wireless keyboard that works for months in darkness and supports multi-device use.
How-To Geek on MSN

This Logitech Keyboard Is Powered By Light

Solar-powered K980 draws power from any light; lasts up to 4 months in dark and has a 10-year battery life. Full-size, slim layout with numpad and laptop-like scissor keys; multi-device, multi-OS and ...