A Simple Quest for a Swing Set

So I work at a home improvement store, and one of my co-workers does some contracting work on the side. He is trying to encourage one of his neighbors to put some simple small-park kind of stuff on a plot of land he owns so that he (my co-worker) can pick up some extra business installing it.

He's seen me messing around with Stable Diffusion on some web apps at work on my down time, and he asked if it was possible if I could take a photo of the site and use AI to insert some of these elements into it so that he could show it to this potential client and maybe sell it to him that way.

"Sure," I said, thinking to myself, 'I can just use inpainting to blend this stuff into the image pretty seamlessly. Easy-peasy.'

It took me almost a full day of on-again, off-again work to get a picnic table I could live with. But I CANNOT get any model, any prompt, anything to make a swing set that I can live with. I've been pecking away at this problem for several days now, and every single attempt at a swing set has resulted in something that is mangled, twisted, or some terrible hybrid of OTHER playground equipment that my co-worker definitely doesn't want in the scene.

At this point I'm just working on it for the challenge, but I admit that I'm stumped. Short of training my own Lora, does anyone have any advice on how to make a coherent swing set to bring into this image? >_< Yes, this is a silly problem to have, I admit that, but I've also learned a great deal about how Stable Diffusion 'thinks' in the last few days, so I consider it a learning experience. Still, does anyone else have any ideas?