I used this pattern here: http://www.redheart.com/free-patterns/slouchy-beanie .
I have made this in the full size and it seems to come out kind of small and not all that slouchy. (I do have a ton of hair.) It's an easy pattern though so I think I'll mess with it some more. The yarn I used was by Lionbrand and it is quite thick, so it works up pretty fast.
It reminds me of a cartoon style honey pot. I can see this crocheted in yellow and brown, with little amigurumi bees or appliques put on.