If you want something nice looking, Exo-Terra makes these reptile caves that are pretty snug. I just don't like them because they are too bulky and heavy for my setup. They are also kind of expensive, so yeah.

Here's a link to those hides:
http://www.reptiledirect.com/index.a...ROD&ProdID=385
the small size works for a hatchling, large for a juvi, and XL for an adult.