Or you could make a potato clock.
I've been wanting one of these little miracles of science for a while now. Why does the potato power the clock? How long does the energy last? Do different potatoes produce different energy levels? What else can we power with potatoes??
I finally found a potato clock kit when I was at Hobby Lobby one day. They also have them in other stores with crafts/kids activities, such as Michaels.
We decided to build our clock in the morning to relieve stress about an upcoming meeting.
The finished product:
My next goal is to bury the potatoes and see if I can grow a potato plant while still running the clock. Or to make some other device run on potato energy. Will we see a potato computer? Maybe!