The following LED lamp is named “Soil Lamp”, which looks like the distilling flask very much, but outdoes most lamps in more ways than one: the electricity is powered through the organisms contained in the mud. The mud is enclosed in cells that contain copper and zinc, which conducts the electricity in the LED. Besides doing wonders for your energy bill, the only thing of the lamp needs is a "splash of water" every now and then, and then it will be shining.