Among my current favorites are Polish made M40s (approx. 1/4 stick of TNT equivalent) and the good old days of mixing powdered aluminum, salt peter and sugar.

Sam, sounds like a sweet canon ! Portions of my misspent youth in DC was making tennis ball canons outta real coke cans, mucho duct tape, and a little bit of Zippo fluid

Back to reality - Seems the more ghastly the posters and commercials are, the more likely children will continue to play with ordnance and explosives to their very detriment. We have a 1997 clip of an incident involving 6th graders who placed a 155 round into a campfire. Although the round detonated low order, a large portion of the projectile killed a young girl and the blast effect and debris injured seven others. One would think that such footage would suffice and preclude future incidences. Sadly, not.

I hope the current popularity of IEDs (especially in films) doesn't end up producing more idiots and casualties among our youth