Something fun- is a small group of Anolis and expand from there. Some of the smaller lizard species can be kept together and cohabitate well. The issue is to many males needing their own territory. So, if you go that route make sure you know male from female at the place you purchase from. Many times, at Petco/Smart, they have large males living together, but if you gave them space, they they will fight (common anoles). I have not worked with any of the exotic type just brown and green commons.
If you work well with geckos there are some real cool Tokay gecko morphs, but they tend to be aggressive if you don't have the time.
If you go with Leopard Geckos, they will climb even if most set-ups are not set-up for arial. They will climb all over in the evening and return to the ground during when sleeping.
There are many small species of snakes that you can create a nice habitat for and even put in a Tupperware water container with small filter to help keep the odor down. (clean habitat and water is always important for healthy animals).
My suggestion would be to work backwards a little. Think of the ideal habitat you can produce- then look at critters that live in that habitat- then see what is available. Or know what you want and create the perfect home.
Check out pros and cons -- ask people and visit sites that are species only. There is information on just about everything you can. I belong to amphibian, saltwater, freshwater, reptile and other forums. Even those have breakdown forums specific to others species.
Example: I use to do saltwater, then did seahorses (their own site) then did cuttlefish and octopus.
I apologize if this is to much info, but I don't know your expertise, so I start from the lowest level. Please don't be offended.
