About 35 years ago I used to fill balloons with oxy/acty. Would put ballon in paper bag , light torch with neutral flame then touch nozzel to something causing flame out. Then hold baloon neck on nozzle till baloon was about a foot in diameter snug in bag and tie off the neck. Have it in open space and light bag on fire and run like hell. Most of the time I could make it about 75 feet before the explosion. Lady 1/4 mile away was on the throne and thought her house exploded, pulled her pants up and ran outside. Neighbor a mile away called and asked if everything was okay down tje road as she heard a very loud explosion. I was feeling pretty proud of mymyself and was telling a few people later. The subject of static electricity was brought up snd pointed out to me that I was lucky to still be able to get around. Needless to say, I don't blow up baloons anymore. However a spudgun built from a co2 fire extinguisher with a 2"barrel 4' long will shoot a semi frozen potato over 900 feet with the same mixture.