See video of it in action here!
Step 1: Find a Fluffy Pillow
The pillow has to be fluffy and be big enough.
Step 2: Create the Barrel
poke one of the corners in to create a pocket
Step 3: Load With Projectile
Use a crumbled up paper or rolled up sock as the ammunition. Place the ammunition into the pocket you just created.
Step 4: Fire When Ready!
To fire the canon just slam your hands down on the pillow top and watch the projectile shoot across the room!
Step 5: Have a War!
Have a canon war against friends or foes! Notice the soldiers are wearing safety glasses!