I think a key thing for a lot of us was this freedom, especially the freedom from parents knowing everything we did. So, what I do that my parents did not know about? First, we were forbidden to climb trees after my dumb five-year-old cousin fell out of one. (We blamed him forever.) So, after that, we only climbed trees when they had a lot of leaves on them so our parents could not see us--the woodsy area was behind a house across the street, so we were not doing this in our own yards. Second, we used to dig holes under the chain link and barbed wire fence around a big field nearby. It had been used as a training horse racetrack at one time, but kids used to start bonfires over there. Third, we picked strawberries in a field at the end of our street. Never told our parents about that because there was a big bull who lived in that field, so we had to watch out for him. Fourth, we ALWAYS went trick or treating in the dark by ourselves, never with a parents supervising us. It was great fun to be several blocks away, getting tons of candy.
Just found this article by Liza Mundy that I copied on 2003 from the Washington Post. It talks about how children have a life without parents:
https://www.washingtonpost.com/archive/lifestyle/magazine/2003/05/11/the-cat-will-play/079b9b62-52fd-4731-a08d-d4c1dda9c2e8/