Yeah it's a bummer no bang bangs no matter what combination. I think many years ago when was 10 I got one and when my girls were that age I tried to find a chem set no luck but I did get an electronic set one loved it the other no. Oh well.
Bill the demon.
I think we crushed out own charcoal, but my kit came with sulfur and potassium nitrate. It was more of a flash than a boom.
I'll tell you sodium metal is about as fun as it gets. My older brother got some one time, a chip about pellet sized and put in in a sink full of water. Oh yeah, open the windows that puts off hydrogen and can explode.
Then a friend of mine was doing a masters and was in with staff everywhere and he'd get some good sized pieces. We would go throw them in chuckholes full of water after it rained. Larger pieces, dime-sized cubed do make a bang.