Don’t ever forget the time with the Water-Powered Clock ($16).  Just fill the tank with clean water, add a splash of natural lemon juice, and you’re set for 6 to 8 weeks of accurate timekeeping before refreshing. You won’t even lose time while changing water, thanks to the built-in memory chip. They come in four great colors that are sure to charm anyones desk.

Adam says,

Wish my phone ran on water!

Doug says,

ya that would really help the water shortage all over the world...