“meh, who hasn’t blown up a milk jug or 2 liter bottle at least once in their life?”
When I was a kid I put calcium carbide into some water in a milk jug, capped and poked a pin hole in it.
Squeezing the jug with a lighter held out produced a nice long, bright acetylene flame.
Until I quit squeezing and the flame sucked back into the jug, BOOM! Singed my eyelashes and my ears range for two days.
Edit: “my ears rang for two days.”