So far I have made 2 switches for my car game. I have tested them and they worked! I am making up my own third switch. There’s going to be a cardboard base and two cardboards walls on each side. A straw is going to go through the cardboard walls. I may make one end of the straw aluminum and one of the walls aluminum and somehow make them touch each other, but I’m deciding along the way. I thought this project was going to be hard and no fun, but it’s so much fun and involves a lot of creativity!