I seem to be on a sock theme. If, even after pinning socks, you find yourself with odd socks, I have about 50 uses for them. This is our favorite. In colder states we've lived in (MT, AK) little wheat or rice pillows are very popular. You throw these in the microwave, heat them up for a couple of minutes, and then have them to keep you warm.
Long ago I realized I could take a spare sock, fill it with rice and use it the same way for a fraction of the cost. These big boy socks work great to put around your neck for stiff necks. We use smaller ones for "hand warmers"....you get the idea.