I have a trampoline-frame coop. The problem is that I'm more clever about coop construction than about posting pictures online. You'll have to be content for now with my description.
It's a round frame with the trampoline still intact. It was retired because some of the elastic bands were fraying. I punched grommets in those places and laced the tramp to the frame with strong rope. Then I threaded strips of plastic fencing through the bands all around the edges to cover the gaps between the bands. That part isn't racoon-proof, but good enough to keep the birds in.
I used 2 X 2" welded wire all around the sides of the frame, and attatched it with good zip-ties. I also zip-tied plastic landscape edging all around the bottom edge of the wire & frame.
I made a square door, about 20" square I think. A wood frame of 1 X 3"s hinged to an outer frame, covered with the same 2 X 2" wire. Then I cut out a hole to fit the frame and attatched it with mending plates to the wire.
I hung roosts inside, long straight branches hung from their ends by ropes to the sides. And put a 2/5" diameter length of PVC across one end near the door, from which to hang the feeder. To keep some of the weather out I stretched a tarp across part of one side, near the roosts, and laid a piece of corregated plastic roofing across the top. This is zip-tied along the edges to keep the wind from blowing it off.
This coop has been working well for us, it serves as a grow-out pen for the dinner guests.