This is only the stuff when the parent were watching. Consider when they weren't. Good times. We waz unbreakable. My favorite was a giant airplane innertube Dad brought home for a brief while one summer. The valve stem was about a foot long and falling in the middle was to be avoided. Only 1 kid got a broken arm but it was ok because the Mom sent a permission note. We played hard at all times and no running home crying to Mom!