Here's how I do mine...It's easy to clean and you can control humidity levels easily. You can piece it together in under 20 minutes, and aesthetically it isn't too bad either. GO to your LFS or a pond centre and buy a piece of the black coarse filter sponge .
Buy it in a sheet the size of your aquarium floor (or as close as possible), at least 4" + thick. Then cut it slightly bigger than the tank and wedge it at the bottom. Fill the tank with water, so it looks like this:
The black area is all the sponge, and the water goes all the way through it, but it serves as a land area. The plants are at the edge, squeezed between the sponge and the glass, and roots into sponge.
There is a slope for the animals to enter/exit the water. The sponge can be cut so you can sort of do some scaping...I hope this helps! If you are interested in this method, I can tell you more...unfortunately a lot of people think this is ugly. There is a major con, though - it doesn't really feel like any surface an animal would crawl on. However, this works well for my chelonians, caudatans and anurans.