The Totally Awesome Pencil Cannon

This is really easy to make but the part other than the rubberband is hard to get so use something else.

Step 1: Get the Stuff

you will need
1.a pencil
2.a rubberband
3.a hollow tube like thing

Step 2: Add the Rubberband and How to Fire

put the rubberband over the end and strectch then wrap around til its on. and to fire
put in the pencil andpull back then release!