How do I make the roller coaster?

How do I make a roller coaster out of cardboard for a prop?

• Answer:

  Use a large cardboard box, cut off the flaps except for one which will be the front. Attach suspenders so you can throw the box over your shoulders and have the box hang around you. Decorate the box with wheels, paint it whatever color you want. With the remaining flap cutout the inside but leave a border and then paint what's left silver and viola! a lap bar.