This switch is closed when you squeeze the glove. The idea came from a project that Mike and Karen at the Exploratorium did with artist Bernie Lubell on how to move bursts of air with everyday materials. We did a three-hour workshop using this switch this winter. A switch that is flipped with a squeeze The air from the foam in the glove makes the inner layer of plastic wrap (attached to the container) puff out, touching the top piece of plastic wrap (attached to the lid of the container). The two pieces of foil on the inner layer connect through the piece of foil on the outer layer, and a connection is made. It works pretty consistently and is more durable than you might think! The materials are pretty simple: a surgical glove, compressible foam, vinyl tubing, a plastic container and two lids, plastic wrap, aluminum foil, alligator clips, double-stick tape (to attach the plastic wrap to the container and lid), glue stick (to attach the foil to the plastic wrap), hot glue (if your tubing is smaller than your holes), a pair of scissors, and a hole punch. Here are some close-ups: The bottom piece of plastic wrap puffs out when you squeeze the glove, making it touch the top piece that's attached to the lid of the butter container. Squeezing the glove makes that plastic wrap puff out, making the foil strips touch (through the foil on the top piece of plastic wrap), completing the circuit.