I don’t know about you, but I hate when my socks get holes in them! After sewing the holes a number of times, socks just need to be retired.
How about this:
Use old socks to polish items and stain wood!
Socks are great to use as rags for polishing shoes, silver, whatever and they also make a really handy rag (because you can put it over your hand like a glove) for staining a new book shelf, dresser, etc.