Magical Microbes MudWatt STEM Kit:  Clean Energy from Mud!  | Core A BIO-ENERGY PET: This Award-winning STEM kit lets you build your own living fuel cell that feeds on soil! FUN: Light up an LED using microbe power. The more microbes you grow, the faster it blinks! ENGAGING: Experiment by adding stuff from your fridge (like Gatorade) to maximize your MudWatt's power SMART: Track the growth of your microbe population and unlock chapters of "The Electric Microbe" comic book with the free MudWatt Explorer App Core Kit includes: 2 power-harvesting graphite disks, LED blinker board, nitrile gloves, 20-page educational instructions, and the MudWatt Explorer App!