The Amazing Two Potato Clock
Not your standard garden-variety timepiece, this unusual  digital clock harnesses the power of potatoes. Safe and easy to  operate, the Two Potato Clock works by capturing electricity created by  a chemical reaction inside of the potato. Sure to turn heads at the  office, and a great conversation starter at home, the clock never  requires any batteries--only a fresh set of tubers (any variety will  do) once in a while. In the event of a potato famine, substitute a  number of other common household fruits and vegetables, including  apples, bananas, or avocados. Instructions for assembly and clock  operation are included.--Chris Burns