She wanted a simple design that she can slip over her head in a neutral color that goes with pretty much anything. I found the pattern on ravelry.com called "Super Easy Textured Neck Warmer" by Paige Buffone. It really was super easy. I made mine a little shorter than the pattern because my friend did not want it to be too bulky. I had the yarn for a while, it is Caron Sheepish and the color is Gun Metal(ish). I think she'll be happy with it.
After seeing this pin while searching through some neck warmers on Pinterest, I also made this neck warmer.
I used a Red Heart Super Saver Yarn , Black
I have one more neck warmer that I made sometime last year. I never got around to taking pictures or blogging about it. It was a free pattern that came to me in the mail. Unfortunately I don't have the pattern anymore but I think it was a Lion Brand pattern. It is a cowl and can be worn as a hood to keep you extra warm. It was a fairly simple pattern using mostly double crochet and chain stitches made in a rectangle then sewn together to make a circle. I believe the yarn was Spinrite Simply Soft Heather Yarn, Soft Grey