Here it is. The bomb recipe, due to popular demand.
Politically incorrect but oh so exciting for little boys. Photo documentation here.
Take a party popper (those plastic things that go bang and crinkly streamers fly out), and rip out the insides and re pack it with caps from cap-guns for aural interest, and add the gunpowder from another couple of party poppers. Scrape the coating off a few sparklers, which makes a grey powdery mess so make sure they do it outside or over newspaper. Then spike a sparkler through the whole thing. The picture here shows how it looks. That way they can light the sparkler and then stand well back. The flame gradually travels down to the party popper and ignites the bomb.
Make sure the child is not holding the bomb, but has it wedged somewhere in a crack or between rocks, and of course DO IT OUTSIDE.
There must be a bucket of water nearby.
All children wear plastic safety goggles and have hair tied back, which adds a satisfying air of seriousness to the whole procedure.
We also have the rule that they must be 12 or over. The younger children watch from a safe distance.
Pets are put inside.
Adults supervise at all times of course.
It is pretty spectacular to watch especially if you light it after dark.
HAVE FUN. But be safe.