> Let the kids play.

To a point. Plenty of people from previous generations with missing digits and hands thanks to play with commonly available fireworks of the area (Australia based, so no idea how common that remains in the US).

My own experiments from my youth also one time resulted in some shrapnel punching through a 5 inch thick concrete tile very close to someone’s head (thought we were safe behind said tiles).

Get involved with the kids blowing stuff up so the danger is within reasonable bounds.