I used a US 5 needle (I think I'd try a 7 if I did it again) and a basic 1 x 1 ribbing. I brought the yarn forward and then slipped the last stitch at the end of each row -- it's my favorite edge for a scarf. For the ruffling on the edges I used a plain garter stitch. The yarn, I am sad to say, has been discontinued, but is made by Trexx. The whole thing is about 5 feet long! I wanted the wearer to be able to wrap it around her neck a couple of times.
It was a lot of knitting, but the mindless kind you can do while watching TV (or sitting around as a note-taker during lab time). I'll have to consider one of these for myself. Love it!