Step 1: You Will Need:
1. tape, duck tape works best, but other thick tape will also work.
3. card board pieces, plastic milk jugs, or the big plastic ice cream containers.
4. a bike!
Step 2: Putting the Card Board On
tape you pieces on any where, near the wheel against the tread is the loudest, also putting it though the spokes works pretty well, but it's not so loud.