I've had a single, male crested gecko for a few years now, and I think they can make great pets for people who have very little space and time to care for a reptile. No UV light required (they tend to hide most of the day), just an average heat lamp. A vertically-oriented cage is most ideal made of glass to keep humidity up and give it plenty of climbing room--they spend very little time on the ground. Mine seemed to poop on me every other time I handled it and it never grew out of the habit, so I barely handle him at all now. In the tank, I use larger, broadleaf plants (one live and a few plastic), sturdy branches for climbing, a relatively large water dish, and I use shredded coconut fiber as a substrate to retain moisture and help maintain a higher humidity. While he mostly eats large crickets (calc. dusted twice per week), he loves fruity baby food (no citrus); his favorites seem to be peach and mango, but he also enjoys fresh, mashed up papaya, and ususally eats in the evening (they are naturally a nocturnal gecko, but I've heard it's possible for them to adapt to your feeding schedule). clean the tank very well every few weeks by soaking and scrubbing decor in very hot water, just spot-clean in between by removing the poo, you'll also probably have to clean the glass sides of the tank every few days as (if your gecko--like mine--hangs out on the walls and excretes waste which will then trickle down the sides of the tank; very unattractive.
Be careful when handling them because they are prone to jumping and don't realize how hard a hardwood floor may be from a few feet off the ground.
I hope this helps you, Crested Geckos rock!
