leopard gecko
jumbo leopard gecko
bearded dragon(might outgrow that tank might not)

hmmmi if you could somehow make the tank able to stand on one of the sides that opens the door to arboreal lizards

crested gecko
veiled chameleon
malaysian golden gecko

let me find this link kitedragon sent me a couple days ago.
its a link to a tank modification instructiions on how you would modify the tank to stand up.

i dunno if you could actually stand the tank up as they put it on its side.or if you would even be interested in doing that.pricing and husbandry for all would be different but i dont know about all that just throwing the ideas out there.