Use homemade conductive and resistant play-doh to build electronic sculptures that light up, move, and make sounds. Anyone who has ever tasted play-doh knows that it’s a salty substance. The salt allows electricity to flow through the dough. With the addition of a homemade dough that substitutes sugar for salt, the dough becomes resistive instead, and complex circuits can be created to power all kinds of objects. Squishing Circuits use battery packs, LED lights, hobby motors, and buzzers to explore electricity in a fun, hands-on way. http://tinkering.exploratorium.edu/squishy-circuits