You can keep them as display only pet. Terrestrial ones like the Mexicans are nice.
I'm planning on a Mexican red-knee and a Fire Leg after my irs refund. Good choices

Get one that is slow speed. Non aggressive, and non defensive.

I do have a PZB sling which I like a lot.

Greenbottle Blues are quite lovely and striking.

Be aware that Ts are much like snakes and Pokemon. You gotta have them all.

And frankly since you are herp fan, you have all the necessary tools (subtrate, tongs, tanks lights, etc.)