I have a big huge hank of lace or finger weight hand dyed 100% wool yarn, never opened, never used. I bought it on eBay not realizing it was that weight. It has every color in the rainbow, crayon-colors (yellow, red, purple, royal blue).
I think it can be used for socks. If you are interested, I can send you a picture. I can also wrap it around a needle size of your choice and tell you how many wraps per inch, since I am not sure of it's exact weight classification.