You'd be surprised, also, at just how small of a hide you can use... one of mine likes hides that are literally too small for him. He was using the medium-sized flower pot sauces as described above, but could only get about half of his body under it. it seems like as long as his head was covered, he's happy. I tried moving to a larger size, and he just ignored it.

Of course, this was before I moved everyone to my new rack, where I don't use hides at all...