I gave my son my old cap gun when he was five. He still has it and they still sell the caps at the grocery store. But the guns these days are plastic crap.
Yup...
I remember getting a cap gun for Christmas as well as my brothers and we were playing some kind of imaginary game when a friend rolled up and after seeing what we got said “I got a shotgun”
Jumping off the roof with a shower curtain (ouch) Riding down the steepest hill you could find on your bike, skateboards with metal wheels, going to the roller rink, pea shooters, balsa gliders and rubber band driven ones...