extra paper and tape to stop the marble bouncing out. right now, it looks just like a marble run, we need to make it look like a mountain with paper or something.
after the mountain the marble goes down a long tube and our idea was to have it hit a car, that would then go down a ramp to hit dominos to set off the next step. the car would not stay on the ramp because it was too heavy. we tried to put some tape on the ramp but it did not work. we then tried different balls. the ping pong ball worked best with a tunnel around it 