Is there someone that you really hate, or a friend who you want to mess with? Well here is a simple but horrible way to do just that. It works as a direct attack or a booby trap, the booby trap is much more devastating. This is short and cheap and simple. I know it is easy but figure why not mention it. No pics because it's simple.
Step 1The bomb
If you've every played with party poppers, you know how much fun they can be, but have you every dissected one? Inside is a small pull firework. When you pull the string, it ignites and the pressure blows of the cap and send confetti out. But you can replace the confetti.