[SirFishalot]

Odd, no mention of the many laws that were probably violated by using the Pyro.

One for instance, making explosives in any form requires an BATF license.

[supercat]

One for instance, making explosives in any form requires an BATF license.

So will the BATF knock down your door for possessing non-dairy creamer (many brands, if sprinkled over a candle flame, are quite spectacular; Coffee Mate doesn't work well, though)?

There are standards for what constitutes a "destructive device". A quantity of flashpowder in a flashpot generally does not. Of course, there are other regulations regarding the construction and use of pyrotechnics, but your statement about the BATF is overbroad.