This Instructable will show you how to make a giant slingshot.
Disclaimer: I am not responsible for anything you do with knowledge.
PS I am entering this in the Alchemy Goods Inner Tube Reuse Contest!
Step 1: Materials
You will need a inner tube (any as long as it is still holding together, it's ok if it is punctured)
a frame (giant Y log, two trees ect.)
a bucket or plastic bowl