I will be getting some branches for the wall gecko soon. I guess I'll replace the water dish as well. I would like to say though that his humidity is around 15 percent, because the whole top of the tank is screen. As for the tank being a 10 gallon, he's only in there until he grows a little more, and at that point my dad and I are going to build him a screen tank or I'll buy him a 20 tall. He's just over 3 inches long right now (measured him last night). All the plants in his tank were grown outside originally (except the Sanseviera), but I sumberged them all for about 30 minutes underwater before adding them. Also, at my house we don't use insecticides or fungicides on our outdoor plants (in fact we fertilize everything with water-change water from the freshwater tanks).
As for the papyrus, I have it sitting in a 20 gallon long tank that is half filled with water (it has a hole for a filter on the side). It sits next to the door for the walkout basement, and it has some feeder goldfish in there (my sister randomly came home with them one day, but they will be going outside next summer). Other plants in that tank include a Water Pickerel, a rush (not the corkscrew variety), a giant cryptocoryne, 3 Amazon Swordplants, and some pothos that grows across the surface. Water circulation is just a sponge filter and an airstone. The papyrus is potted in a pond plant pot (one with all the holes in the sides). The roots just grow out throught the holes in the pot. With all the feeder goldfish in there it gets lots of fertilizer, an it manages to keep nitrates around 5-10, with no nitrite or ammonia.
Going to the store later so I'll see if I can pick up a cork tube and some branches.