I'm not sure what size you are looking for, but Vickey Bishop aka Crafty Ferret makes really nice ones. I bought one several years ago and there is always someone sleeping in it. It holds two females comfortably but when the male tries to squeeze in it isn't a pretty sight. Don't buy the one from Jeffers. It's okay but only big enough for a hamster. None of mine will go near it. Laurel [Posted in FML issue 3690]