Fuel cell that harvests electrons from the bacteria in mud! And ELECTRons mean ELECTRicity....you get me?
The cell also makes a great habitat for a beta fish... The bacteria decompose the fish poop adding to the cell's fuel and keeping the water clean!
Step 1: Get Some MUCK!
"MUCK" is actually the correct term for soil from Wetlands .... I LOVE WETLANDS!
Muck has all kinds of awesome bacteria, one of which is Geobacter, it produces electrons as part of its cellular digestion!