I usually try to knit a pair of socks every month so many friends give me sock yarn. I only knit with one kind and, therefore, have a stash of nice soft yarn that I wouldn't use for socks. I thought of Elizabeth Zimmermann's "A Very Warm Hat", and develolped one with sock yarn. It is warm and comfortable. I knit one end and then picked up stitches to knit the other way. In total it weighs about 90 gm. Unfortunately, I have about 50 gm of each colour left and will have to knit another hat or look for some other project. Any hints?