Gaiters

For my niece:

The neck gaiter is a vital component of the cold weather comfort arsenal. It's basically a stretchy fleece tube that you wear around your neck. It's easier to use than a scarf, since it doesn't need to be wrapped and adjusted. It can be pulled up over your chin and nose for when it's really cold, yet isn't as bulky as a face mask or balaclava. It also doesn't look as geeky.

Here's some examples: http://www.rei.com/online/store/Search?storeId=8000&query=*&cat=40003633&vcat=REI_SEARCH