I made Vogue coat pattern 8930 to go under it. This pattern worked great and is cut so the collar can be worn two different ways. It does not have any fastenings and I found that it actually stays overlapped in the front quite well without.
So here we have, in addition to the scarf, a crocheted hat, knitted fingerless mittens, and 2 pair of hand knit socks. The red and green socks are knitted using just one yarn---it is made to change colors so the knitter doesn't have to!