I'm challenging myself to knit/crochet at least 52 hats this year to donate to the homeless in my area. This is my first hat (pattern link). I used leftover Cascade 220 and Patons Classic Wool Merino. It's supposed to be adult-sized, but I had to use a few hooks smaller than called for (G is the largest that I have), so it's child-sized. Quick pattern that crocheted up in no time.
I'm using 2 Ravelry groups for inspiration... Hat of the Month and 52 Hat Challenge.