materials:
i propone tank (preferably one used in camping stoves)
match stick
fuse
balloon(bigger the better)
tape
Step 1: Put the match stick into the nozzle.
Step 2: Pull the balloon over the propane tank nozzle.
Step 3: Push down on the match stick to release the propane and fill the balloon until satisfied.
Step 4: Pull the ballon off the nozzle and tie it off.
Step 5: Tape the fuse to the side of the balloon.
Step 6: Set the balloon on something to hold it in place.
Step 7: Light in an area clear of trees and other flammable objects.
EFFECTS: the ballon explodes causing the propane to ignite and a huge fireball.