Ok! After some research, I think I have a solid idea for a PacMan Frog Vivarium. I've seen a LOT of terrariums online, and have taken ideas from them, as well as some innovative stuff I thought up on my own.
I imagine a 20 gal. tank with a layer of rocks, then substrate with a heating pad beneath the tank as a way to increase humidity. Live non-toxic plants (in Pots) in the back corners, and the backdrop area. Surrounded by larger rocks covered in feather moss as a barrier to prevent the frog from burrowing into them, and keeping them stationary while the substrate surrounds the larger rocks at a depth which provides plenty of room to burrow. This will also serve as a way to introduce water into the rock layer, "if" necessary. I intend to use a shallow water dish as well! Cleaning is the only challenge I see! Mostly tear down, and rebuild once a month or so! Any thought?