Jumpers, Inflatable Jump-o-lenes and indoor nursery trampolines
The Jump-O-Lene is a heavy-duty inflatable trampoline. Aside from puncturing with a sharp object, the jump-o-lene does not "pop". Superdairyboy has had all of the jump-o-lenes set up and in use on gravel with children jumping in them, seeing hard use with no problems.
The Jump-O-Lene provides hours of bouncing fun for children, and as a bonus, gets them to stop jumping on the bed!