You might have come across different kinds of clock, clocks powered by batteries, clocks powered by water and so on. Have you ever come across a clock powered by Citrus Fruit?

Well, now you have it – the Citrus-Powered Digital Clock. Just cut a lemon in half and place it on the clock handle. It powers up the device. This clock shows you the time, in hours, and minute’s format.

You can use the lemon to power the clock for a week’s time. Then you’ll have to use a new one. It’s sort of wacky, but it’s ingenious and would even make for a nice present for someone.

[Via Geek Alerts]