I had a chemistry set I bought in the late 50's that had to be picked up @ a railway depot. It had pure sodium & potassium metal as well as magnesium ribbon for igniting ferrous metals to make crude steel. Needless to say, I almost burned the place up several times but what a lot of fun it was. Today, none of the chemicals are even available. With Potassium chlorate you could make any king of firework imaginable.