No pics to post yet, but I'm a few months into my setups on 2 stacked 4x2x2s. My setup is fairly similar to the one above from jmcrook and I used his suggestion on the corner brackets. A few differences are that I used fresh cut bamboo instead of the tree stakes. In addition to bamboo, I had access to "driftwood" from a nearby river so I was able to cut, clean, and sand 4', Y shaped branches that run the length of the enclosure, but also provide a climbing route up to the bamboo and raised shelf. Neither snake actually needed the climbing branch to get up to the bamboo and shelf, but they both seemed to like it. I didn't wrap the bamboo in fake plants, but I did wrap fake plants on the Y branches and I put some fake plants over the ground hides to partially cover the plastic. They both seemed to like the fake leaf cover over the hide openings where they could stick their head out and still feel "hidden".

My only issue thus far is keeping the humidity up this winter. Misting only works for a day before it drops back to about 45-50%. I'm having some luck taking out a few handfuls of the cocohusk, wetting in a sink, draining, and then remixing with the rest of the substrate in the enclosures. This keeps up the humidity for a week+. I'm also playing with mixing in some moss with the substrate and keeping a small pan of just moss embedded down in the substrate.

I have a large water bowl at ground level and a small water dish up on the shelf. I have hides on both sides of the shelf and both sides at ground level. The hides don't take up much room yet b/c the snakes are a 1.5 year Tarahumara and 7 month BCA. The only things I can't take out quickly for cleaning are the bamboo cross beams since I used twine to tie them into the corner brackets to keep them from spinning. I also tied in the top of Y branches, but can quickly untie those.

No live plants or backgrounds for now.