In technology, we made switches out of cardboard. We had to make 3 switches and they had to work different. It was a challenge. Than we used tinfoil to hot glue on the cardboard. When we tested them, if they didn’t light the light up, we would start over. It works because we used metal clips, put them on 2 different pieces of tinfoil, since the clip and tinfoil conduct electricity, it worked.