Since I just got a HUGE lot of fingering-weight (and light-fingering-weight) yarn at a thrift store, I decided to knit some doll tights.
This is a paid pattern, but it's very well-written and worth every penny. You can find the pattern on Ravelry here: Doll Tights and Socks by Angela Parker.
You can find my notes on this pair here. (You'll have to use this link, since I shared it exclusively through this link.)