Ah, cap guns. I burned many a roll of paper caps in various cap guns when I was a kid. You could also pop the caps with your thumbnail, even more fun when one would ignite when lodged under the nail. Or you could just smash a whole roll (or more) on the sidewalk with a hammer.
Omg loved Cap guns, go and buy a few rolls if caps and used the hammer on them
Only better was having an older cousin stop by the house with every empty space on the car filled with fireworks from TJ.
Popped off 2 hubcaps and we got everything. Drove the neighbors nuts for months. Ah the 60’s and 70’s