My parents recently bought me at an auction some fake snow packets for $5. What I didn't realize was it was a few hundred packets for $5. What I'm thinking now is to make an air cannon, similar to a confetti cannon, out of some plumbing fittings. Has anyone had any experience with this. As far as a trigger I could go for just manually turning the valve. Actuated valve so the kiddies could press the button or possibly a DMX controlled actuator so the snow shoots in a particular part of the song.