I remember bringing a piece of wax paper to the park to make those old metal slides super fast.
I’d also see how high I could get a swing going and jump when it was at its’ highest point. Now “that” was fun. :)
We used to have metal swings that were flat and they had hard rubber around the edge. If you got hit with the swing, you took a shot. Our swings were right on the beach and we’d keep track of how far you jumped by the prints you left in the sand.