My lip balm, sunglasses, and a hanky are three accessories I never leave home without during the winter.
I've been accused of having a lip balm addition, which is likely true - I keep it by the side of my bed, there's a tube in the pockets of every coat I own, and I keep at least one spare in my bag. Hey, getting chapped lips is no fun and I like to protect mine from the freezing wind.
Ski goggles can come in handy if there's a frigid headwind or blowing snow, but in most cases I'm happy with just my sunglasses. They provide cover for your eyes without the alpine look.
Winter and runny noses go hand in hand. Keep a hanky in your pocket and you won't need to sniffle and search for a box of Kleenex upon arriving at your destination.
I've got nice winter boots that keep my feet warm and dry while walking in them. On the other hand, after about four miles of biking in single digit temperatures, warm boots aren't enough to stop the cold from setting in, and I've got eight miles to bike from home to work.
I'd been hesitant to put hand warmers in my boots, thinking that the discomfort of cramped toes would outweigh that of frozen ones. However, this winter's weather persuaded me to give them a try.
I'm happy to report that the warmers have helped keep my piggies warm and they still have enough room to wiggle.