The glint of a silk scarf worn to fill the vee of a jacket is a very continental look that I'd like to see more often in other parts of the world. Particularly useful when the wearer has an open shirt collar, a length of silk closes the neck while it protects the chest from the chill.
White dots on blue silk is probably the most useful combination, white dots on olive can be interesting and there are a plethora of compatible paisleys. I like to knot my silk like an ascot, which is to say that I tie it like a four in hand but throw the front blade over the knot instead of pulling it through.
This is a look for moderate winter days instead of the Siberian variety as silk isn't as warm as cashmere or wool. Not as warm but better looking. Isn't that one of life's daily trade-offs?
Try the scarf worn continental style.