Wow, that looks like a lot of fun, MH. I loved jumping on our big trampoline. Unfortunately, last month we had to get rid of it because of our insurance company. That's a sad ironic story in itself. But I did buy a small trampoline (rebounder) that I use indoors now. Still fun.
You're right, we have to learn to work. I still haven't really learned, much to my parent's chagrin. Work does not come naturally to me. I'm excellent at all sorts of playing, though! Play piano, sing, play board games, play on internet, play with kids, play outdoors, play with food, etc.