Do some terraforming or set up a faux naturalistic setup for your vivarium. It is not hard to do, there are a lot of people do it for dart frogs, monitors and bearded dragons.
I am seriously going to try and set up something really nice for him.. right now he is in a big tank with gravel and stones and a landing so he can get out the water..over head light and heater.. but when i do the rubbermaid tub he will be out of the fish room in the basement with heat lamp over head {as sunshine} and filter and heater etc.. we already kind of had a plan for him since we really did not plan on giving him up.. i just wanted to make sure before i did all this that we were doing the right thing..
Most zoos, if not all, have a policy of not adopting animals. The only zoos that will take him are private petting zoos that you find on ranches.