A sock doll swap is an exchange of dolls made from socks.
In this 2010 Wild Art Dolls exchange, the dolls had to be made from socks and three of them had to fit inside a flat-rate Priority Mail envelope.
Three of us participated. Here are some of the dolls:
My dolls were almost identical. (The fluffy orange bits at his right shoulder are ends of the yarn I used to give him a pom-pom tail.)
My doll design started with ideas I gleaned from the book, Stray Sock Sewing. (As I’m writing this, you can snag a good, used copy for under $3.)
I love making dolls from socks!
A quick survey of Amazon will show lots of different kinds of sock monkeys, including a Beanie Baby sock monkey, and books about making dolls (including sock monkeys) from socks.