everybody has seen those little "champagne bottle poppers where you pull the string and they shoot out all those streamers and crap, but the other day i saw these big spring powered versions at ACE, 3 for a buck, so i bought em.
You do not want to actually have one of these things go off in your house, they shoot confetti and crap all over, as i found out.
but if you take the junk out, these little beauties make pretty fun little launchers, I have been shooting this little toy all over the house for my dog, and found i could get a rock 30 feet or so. so they are cool for that stuff. also, i was thinking about someone rigging one of these to shoot out of a barrel and then shoot out the confetti and stuff in mid-air
edit=> sorry i have no pictures, i can use our camera later tonight
they dont quite fit in a 1.5 inch barrel, or i would have done it already
oh yeah, to shoot them, there is a knob on the bottom that turns, not sure how you could turn it in mid air.