CO2 Bomb

Get a CO2 cartridge and empty by poking a hole in the soft lip. Be careful not to get it on your eyes or too much on your skin, it's pretty unpleasant. Then, make the hole a little wider. Fill the cartridge with black powder and insert a fuse of your choice; one of medium length is advised. Igniting the bomb will result in shrapnel. As with all of these projects, be careful as fuck and don't hurt the wrong people.

Concept by Jolly Roger