After you’re done with your latest dress made from a fat quarter, do you just recycle the cardboard that came inside? Keep it! I especially like it for the soles of shoes, but here is yet another use!
Hangers for doll sizes besides AG and Barbie can be hard to buy commercially, so this is an option that will work for Sasha and Wellie sizes.
Use this pattern to cut out a hanger, fold your cardboard in half, and use any nontoxic glue that works for paper (glue stick, tacky glue, etc.) to stick the two sides together. Weight it down with something if needed to flatten it out while the glue dries.