Batteries annoy me. They cost a lot, don't work for very long, and disposing of them is hit and miss (if you want to do it right). Someone, however, has been looking out for me. ThinkGeek has amazing water-powered clocks that require no batteries at all, just some form of liquid (water is preferred). One clock has a place for flowers, and another has a built in alarm, countdown timer and thermometer. If you're thinking that topping up the water for something like that to keep it running is more of a pain than batteries, fear not. Fill the reservoir and the water lasts for longer than most Hollywood marriages. And for you sunlight deprived office workers, there's a water-powered calculator as well. [Elana]
[via Popgadget]
From: BEST OF 2008: Eco-friendy and sustainable shoes