2 minute video. Tannerite is a LOT of fun, and legal. Just be carefull.

Safety: Give the FOOM Plenty of Room
http://weaponsman.com/?p=30707" onclick="window.open(this.href);return false;You’ve probably seen, and maybe used, Tannerite, a binary explosive that’s permissible to use in reasonable quantities and with reasonable safety precautions. It’s not a terribly high explosive, but it’s not trivial either: it’s based on ammonium nitrate, like many of the things terrorist bomb-makers like to use, and it’s shock-sensitive, so it can be set off with a hit from a bullet. Those two in combination should make you respect it, at least. And as this video shows, when you add unreasonable quantities (3 lb. packed in a sheet-steel lawnmower) and unreasonable distances (a foot over 14 yards, by police measurement), you’d be lucky to escape, like this young man, David Pressley, did, with a Life Flight ride and a lifelong disability.