I have a "Granite Tower" like this http://www.reptilesupply.com/product...roducts_id=952 and my BP LOVES it. It is kind of tall for a BP enclosure, but I have kind of a non-traditional setup. Not all of them like to climb.....mine does...although he's not exactly the most graceful.

Basically as long as it's very dark, warm, and they can stuff themselves into it.....they'll be happier than a pig in.....a....pig house.