When you are forced to spend 30+ minutes/day 120+days/year over the course of 8+years around a set of limited devices you tend to think of a lot of interesting ways to use them because otherwise it can get boring fast.
I got the point from others that some are apparently more creative on swings than I but I must ask who is so forced?
I wasn't forced to play with a swing, but there were a limited number of objects and we had to spend the time in the playground area during recess/lunch and couldn't leave school grounds. This was a suburban public elementary school in San Jose about 20 years ago.
Eww. I suddenly appreciate my elementary school so much more.