I'm past due in reporting on Week 1 of Snowbike Follies, but until I have some photos of the trusty steed to share (per the request of iBOB-pal Scott), this will just have to do.
I'm lucky enough to be married to someone who's as nuts about knitting as I am about bikes. It's like living with a giant spider: sit still long enough, and she'll probably knit you to the couch. So, when I mentioned that I was going to start riding again, and gosh, it would be so nice to have a wooly head-and-face protector, she went straight to work. The pattern (available for free all over the Web, apparently) is called a "helmet liner" -- designed in most cases to be made for troops serving in chilly climes. Mix that with some wool/mohair blend yarn and the abovementioned knit-nut, and you've got the oh-so-fashionable "cyclist preparing to rob a convenience store" look shown above.
When I need a little more airflow, I shift to this look: "cyclist auditioning for a part in a local production of Monty Python and the Holy Grail" (insert your own coconut clip-clop sounds here).
So far, this melon-insulator has been perfect for the oh-so-brisk 15-25F temps of Iowa in January: toasty without being clammy, fast to dry, and nowhere near as stinky as the synthetic balaclava it replaced (unless the smell of wet wool isn't too your liking).