I have seen only two on here - one by Snowbird, and I don't recall who the other member was. I have been wanting to build one for some time now, but just can't decide how to go with it. I would love to have something that's easy to take down & fold flat (or close to it) to save space. If that just won't work well, then I'll go with a stationary one. I've seen a post that someone made one with foam board and velcro strips...another post where someone said they made one with PVC. If peeps can provide pics and measurements along with any instructions, that would really be helpful! Thanks!