Ah yes, matchbox bombs, they were good value at 3am (hands in pockets).
As Marty said, kids should be made aware of the dangers so they at least have a respect of how dangerous these "games" can be.
The stupidest thing I did was as an 8 yr old in Karratha WA.
They built the houses using some kind of nailgun on steroids, used to find hundreds of .22 calibre shells lying around building sites...well one day we found one that was still crimped & live...so what did we do?
Hit it with a rock!!
I was deaf for the rest of the day, copped a bit of shrapnel in the thigh & finger...so very luck to get away with just that.
STUPID, STUPID, STUPID...kids.