Construction:

Steps:
1. Cut the bottom of one can about 2.5 inches high
2. Use a hole punch to create a hole for the wood splint in this 2.5 inch section
3. Cut four 1/4inch sections in the smaller section
4. Cut another hole in the bottom of the container that has not yet been cut
5. Place this section in the smaller one and tape them together, making sure the hole is not covered
6. bend the metal lid out to create legs to hold the cannon up with
7. Tape this metal piece on and hold your cannon up