Solar Deluxe Exucation Kit Product# SK40  $29.95  Free Shipping By solar power, harness the power of the sun with environmental-friendly D.I.Y. kit! Children can do a series of do-it-yourself experiments to acquire the basic knowledge of solar energy. Children can learn how to make an electrical circuit, make a solar circuit, how to increase voltage and current, and how to use solar power to produce energy for a radio, calculator, battery charger, a cassette player and more!