Slide

My family invested in a jungle-gym when I was a kid. We were lucky. The slide was wood with a thin wax coating. It lasted about one year in that region, baking in one season, swelling in another, freezing and thawing in the other two, until it became a splinter distributor and we never used it again.

For the metal slides, however, lying on a skateboard + metal slide = somehow never broke a bone.