With its clear plastic cover, Loopwing lets students see how a wind turbine works. Even in a light breeze, the rotor wings spin to provide power to charge a capacitor, which generates enough electricity to run a motorized car (included) on top of the unit. Two types of gears can be selected to generate higher amounts of power depending on wind speed. Loopwing’s stand has a built-in weight to keep it steady on a flat surface and features a grip so it can be operated as a handheld device.