For my male classic its a "medieval" theme. I made him 2 castle hides that look like they are made out of mossy cobblestone, and I have a huge green plant int there. For my female snow its a flower/zebra/polkadot theme. It turned out rather cute! Here are some pics.
I am going to add more things to it. For example, dragons and kings/warriors.
I am getting more flowers and latters.