Do you dare to mohair ?
There are so many shawl patterns that use mohair to create a light but warm accessory. Two of my favourites are:
Strawflower Shawl by Life is Cosy with can be purchased from the designer here.
Sparkle and Fluff by Kitty with a Cupcake which can be purchased here
Or they can be purchased from Ravelry.
I have put together some options, but if there is something else that takes your eye, please let me know.