Our kids resorted to making a swingset with the old hand-me-down (and so-not-safe) slide. They found a spare tire to a retired jogging stroller, one of Ryan's tie-downs, and voila! A tire swing!
My parents bought them this for Christmas. It was assembled today, and they love it! So do I! We put it out behind the real house thinking that they could play while we worked. (It's not so I can't hear them fight...)