With a 35mm film canister, the sparking unit from a cigarette lighter, a knife, and some fuel, you can easily make the world’s loudest party popper.
Sounds like a good weekend project to me!
[Instructables - The World's Loudest Party Popper]
It used to be that you either got shot or you got stabbed, but now with the G.R.A.D. .22 RS Knife Gun, you can have both. The knife holds 5 bullets in a revolver type loader, and fires with a simple pull of the handle trigger. Killer dude.
[Via: TechEBlog]