A digital clock and calendar powered by food! This fruit powered digital clock and calendar combines micro-electronic technology with the natural electrical potential of a fresh fruit or vegetable. The Fruit Clock uses the original scientific principles on which all modern electrical storage batteries are based. Just add a fresh orange, apple, lemon, lime, pear, banana, or any another convenient fruit or vegetable to the supplied components in this kit and you have the perfect synthesis of natureâ€™s own electrical power resource and the accuracy of a digital clock.
Link -via Everlasting Blort