Baby hat suggestions?

[girlpearl]

My nephew, who is, in my wholly objective and professional opinion, the cutest baby ever born on planet Earth, will be turning one very soon. My sister informs me that he would like a hat for his birthday, and my brother-in-law clarifies, "Preferably something with ears."

I've already knit him a variation on the Little Devil hat, designed (at my sister's request) to match the ear shape & color of her dog.

Does anybody know of any other baby hat patterns that have ears? No suggestion too goofy. They live in Chicago, so something nice & warm would be ideal.