If you're looking to add to your arsenal of office pranks, you can turn a film canister and some paper punch cast-offs into a harmless but colourful confetti bomb.
How-To Wired, the how-to wiki of Wired magazine, highlights a clever prank you can pull with basic office supplies. You'll need a can of compressed air, finely cut paper or holes from the office paper punch, and a film canister. Flip the can of compressed air upside down and carefully add some of the liquid from the can to the film canister, throw in the confetti and then snap the lid on. Place it face down on your victim's desk and in about a minute the film canister will pop off like a confetti-powered rocket.
Read the whole guide at the link below for more information including tips on how to ensure you get a tight seal on the canister.
Make a Confetti Bomb [Wires How-To Wiki]