I'm going out to shopping for cage accessories later today or tomorrow, and would like some suggestions on what his cage could use.

It is a 20 gal tank with heat, a basking rock, those viney things(he loves 'em) in the back, a decent sized water bowl (planning on getting bigger one), and his beloved tree thing. The tree is by far is his favorite thing in there. if you take it out he freaks out. He hides, sleeps, and just hangs out in there most of the time. Plus he found this fault in the design where he can squeeze up in the branch part and completly hidden.