A theatre company I've worked with (
squonkopera.org) used small CO2
cartridges. I also did one show with Polyphonic Spree. Their 4 confetti
cannons were fed by 2 compressed gas reservoirs that looked like 5
gallon gas cans. The Spree's confetti cannons hit the back of the
balcony. We were cleaning up that glitter confetti for weeks. They set
them off on the first song. For a few seconds ... I thought I was having
a flashback from my TRIPPING daze ....
- Denny