Well, I am using a Rubbermaid container. One hot side one cold, use a UTH to make the Hot side. I used two of the small Chewbs (Those toilet paper roll things they sell for Small Animals) for my hides, one on each side. I half bury them, and my snake loves them. I have a water bowl on the cool side, big enough for him to climb in if he wants. In the center I have a bark vine all wrapped up with a leaf vine intertwined with it. Kaa loves to climb under and around that. I have a lot of Aspen in there, that is what I use for my substrate, and Kaa loves to burrow, especially where the UTH is. He seems happy, and I find him on both sides on a regular basis. Now that I dumped more aspen in, he's happily burrowing away and I'll probably never him again, LOL.