Leftover sock yarn ... yes, what could you conjure up from it? I’ve picked out 3 ideas of mine for you. And because I like making doll clothes, they are all models in this genre. Everything made with leftover sock yarn. I hope you enjoy looking at them and making them yourself.
Warm regards from Ina
Cardigan for Dolls (knitting pattern)
The jacket length is variable. So you can knit it from short to long. We knit it as a top-down raglan in one piece. With such small doll clothes, the seams would only get in the way.

Poncho in Various Versions (crochet pattern)
This is a lovely beginner project, because the shape of the poncho is very simple. And we only crochet chain stitches and single crochet. If you use self-striping sock yarn, I think it looks more interesting.
Elegant Evening Dress for Small Dolls
We knit it with a set of double-pointed needles in one piece. It doesn’t need a closure because it’s a halter-neck dress.