I don't have a swingset but I would use one as a trellis if I did. I have been picking up metal baker's racks when I find them at garage sales. I see that one in your bottom photo. I'm using them under my carport for plant "stuff" like you did there and am going to put a few in the yard for "instant" trellises. I can't buy a good metal trellis for $5 or $10 ... but I can quite frequently buy old baker's racks for that.
