On the day of the contest you will be given everything you need to succeed, but if you'd like to practice (highly recommended) you may use the following:
You or your team must create a land rocket. More specifically, something that travels along the ground as far as possible before being stopped by the force of friction
You can use any/all of the materials listed but the single requirement is that the straw, or part of the straw) be inserted into the balloon, with a portion of it sticking out, permanently. If it falls out, your run will not count.
The "rocket" that travels the farthest, wins!