Button in the Shape of a Cloud

This is a lost artifact, known only through ancient stories of long-deceased ancestors, and has not been discovered in Ur. Helen, sister of Harris, spent months making this button, marked down in the annals of Grendaline as one of the most beautiful ever to fasten a pair of trousers. Using individual strands of batterfly silk, harvested from their tough underground webs, Helen slowly wound, twisted and knotted until she had a soft, delicate, but indestructible cloud-shaped button. Only a buttonbarian would say it now looks like pocket fluff.