A confetti or glitter trap is a prank set-up which drops confetti or glitter on the victim from above. The cup of confetti over the door is a simple version of the same concept, but this method is much better. It can be set to go off on nearly any trigger (opening a drawer is a good one), anywhere with a drop ceiling. All you need is a little bit of thread, a funnel (which you can make out of a piece of paper), some glitter or confetti (three hole punches make an excellent and free source), and a mousetrap. A few plastic drinking straws can help too.