Pen Canon

this is a very simple canon made from household supplies

Step 1: Supplies

supplies: party popper,
cheap click pen, and projectile such as a spit ball or bb

Step 2: The Charge

first, cut off the top of the popper so you can pull out the explosive keep the explody part for later on..

Step 3: The Gun

now take the back off your pen and take out the guts all you need is the tip and the tube

Step 4: Put It Together

now take the tip off and feed the sting through so it looks like this

Step 5: Finished

now just put the tip back in the barrel and your finished

Step 6: Fire!

to fire just put the projectile in the barrel and pull the string!