What we used to do is put some water in a faygo pop bottle.
(I dont know why but they worked the best)
Then you dump in some carbide and cap it. Throw that somebitch.
The pressure builds and them you shoot it with a BB gun ..PaaBoom!
Throw it in the fire for pyrotechnic effect.
Then the ultimate was dump a handful down a muskrat hole and follow with a bucket of water.
Touch that off with a lit rag on the end of a stick.
Holy Carp! It will shoot a fire column 15 feet up and the ground will heave a foot LoL
Yeah we were goofy
Oxidizers are wonderful things, fulminating compounds are even better!