Mill end yar question

What is mill end yarn? And is it worth buying for items such as donated baby blankets? Thanks for any help

Mill ends are the last part of either a particular sort of yarn or dyelot and there isn’t enough left on the rollers or mill to make a full skein or hank or ball. So those are packaged up (some are very gourmet yarns) and sold as "mill ends"
It has nothing to do with quality only quantity.:thumbsup: