Thanks everyone! I've been looking into a few that reptile65 suggested and I think a crested gecko (or maybe a pair) might be right for me. My tank has more height than floor space so I think it would be great for them. I have to go to the pet store tonight to get some snake food, so I think I'm going to talk to the owners and get some questions I have answered. It's a reptile shop not Petco/Petsmart so I'm sure they'll be able to answer my questions.