BFL Forever Keyhole Scarf
Gauge isn't super important on this pattern, as it's written for handspun and everyone's is going to be a little different. I used 4 oz. of Kitchen Sink Dyeworks' Blue-Faced Leicester roving, spun it up and plied it to about 5.5 WPI, and had exactly enough to make this scarf.
There are instructions in the pattern to adapt it to your own neck size, instructions given are for an approx. 13" circumference neck.
You can also sub in any bulky or super bulky yarn, if you aren't into spinning!