This is a picture of my switch, and the link is to a video of my switch in action.
This week in tech we were making switches out of materials around the room. Mine is made of cardboard, tin foil, clothesline clips, aluminum foil, popsicle sticks, and rubber bands. How my switch worked is you would connect the clothes pins to the cardboard in the center and press down to the base. The reason this works is there is aluminum foil on the bottom of the square and the top of the base. We clipped 1 alligator clip to the base and 1 clip on the square these clips were also connected to a breadboard with an LED light. Because aluminum foil is conductive when the two pieces connected the circuit was complete, turning the light on.