The old days stuff was... Bottle rockets Sparklers Firecrackers Cherry Bombs Ash Cans M-80s Roman Candles
All of which were and still are 'illegal' in NJ
We get everything here that is ATF defined consumer grade but the cherry bomb/ash can/M-80 stuff (federal law after some politically connected girl got killed near DC. That limit is 50mg of explosive material. (a regular firecracker) OTOH you can have 130mg in a aerial shell.