I made a couple of pairs of Polar fleece socks with a pattern from Green Pepper. They seemed to work well for me. My wife didn't like them though. Fit and finish are important.
Green Pepper sock pattern
Now that I have a serger, I should make some more. Ah, I don't have time. Maybe I'll buy some
Polar Feet
They are also not universally liked, otherwise we'd see more of them for sale. Perhaps I'm the only one that likes them.
If you try them and like them let us know. Or if you don't like them, let us know why. There may be some limitations of these socks that I haven't run into yet.