Potato ClockA scientific toy that will educate and amaze! Generate electricity using only the power of nature. Use various foods and drinks around the house to power the digital clock. It's not just potatoes that make unusual batteries try tomatoes or lemons or even a fizzy drink. Power a digital clock using only a potato as power. High Voltage Inspirational fun! Explore alternative energy in a fun way. Helps children to understand electrical principals. Guess