I wouldn't suggest chameleons unless your using a mesh tank with optimal air-flow, except if you want to do pygmy chameleons. Also, chameleons get easily stressed when handled for the most part (there are exceptions of course). I own an ornate uromastyx and he's pretty cool along with two chuckwallas and they only eat greens. I'd definitely check out kingsnake.com or faunaclassifieds to get ideas.