I'd give him a bigger water dish, place a flat rock or something else in the bottom (I use a tera cotta pot saucer upside down) and get him a "Pineapple" variety Dracaena. One of our Pacific tree frogs, and now our new Whites Tree Frog's, love snuggling down between the leaves to nap. I think the live plants help make them feel more secure & less frustrated and are kinder to their skin.
<< Pacific tree frog in Dracaena
<< Pacific tree frog in African violet
<< Outdoor Pacific tree frog in a Hosta
(Will have to get pics of the new Whites Tree Frog girls in their dracaena)