This is a very simple prank that has a nice pop when steped on and is reloadable.
Oh and this is only my second intructable so merry christmas
Step 1: What you need
1.string bomb/cracker.(fairly cheap and similar to confetti popers, got mine from cannonfuse.com at 69cents for 36)
2.metal wire coat hanger.(plastic ones will not work, plastic coated metal might work)