I have several hats to keep my head warm in the winter. Unfortunately, since I usually have my hair up, the lumps of hair result in a very odd look. So I searched Ravelry and found the perfect thing - a pony-tail hat (Hannah - Ravelry link). This was a super-fast knit and only took me a day to make. The yarn is Paton's Soy Wool Solids and started as off-white (this yarn is like knitting with twine). First I Kool-Aid dyed it with Berry Blue and Blastin' Berry Cherry. That was a nice deep rose color. Now normally I'm a walking Fashion "Don't" -- but even I didn't like the rose hat with a red jacket, so I overdyed the hat with a Berry Blue/Grape mixture, resulting in a nice mottled look.
The Little A has an even better way of keeping warm -toasting herself in front of the fire. We had to set her quilt back a couple feet, otherwise she would sit inches from it.