When most crafters and artists think of Etsy, they think of a place to sell finished work.
But did you know that they also have a needlecraft supplies section as well?  You can find anything from hand-dyed fiber to vintage cross stitch patterns in there.  It may take some browsing but there are definitely some treasures.
Check out some of the goodies I found – yummy!

Hand-dyed inspiration pack of fabric, thread and lace from The Rainbow Girl.

Vintage fabric yo-yos from Art, Joy, Stuff.

Hand-painted silk/rayon/tencel thread from Yarntopia Treasures.
images: Etsy