It really doesn't matter what I do. Knitting was just easy for me to carry around and I just happened to have a pair of socks started. But anything that requires concentration works.
These socks are the "Simple Sock" from "Socks Soar on Two Circular Needles by Cat Bordhi. I lost the wrapper somewhere in the hospital so I can't tell you what the yarn is, but it's a wool blend sock yarn with long color runs. I used size 2 circs.