We moved a lot...and the first thing I did every place we moved was to climb all the trees that were climbable!
   My mother would come out and say "you're going to fall and break your neck...come DOWN" ...but I would say "come up & GET me"...and I never did fall. I think she was always disappointed.

...and yeah, fireworks...cherry bombs, M-80s...inventing ways to launch stuff out of pipes...etc...

I also dug holes for playing with toy vehicles...BIG holes (with a friend)...kinda like an open pit mine with roads up the inside.