I remember about 10-12 years ago, I was with my parents staying at my great aunt's house in Pine Top, and the neighbors were filling balloons with acetylene and oxygen (off of an acetylene torch setup) and lighting the string and watching the balloons burst when the fire on the string got close enough to the balloon.
It was moderately cool to observe from 2 houses away, but one ended up not floating up high enough, and put a 6 foot crack in the foundation block on their house when it exploded on their patio.