I'm genuinely sorry that I can't ship actual parcels to the USA until customs rules are a little less hostile to Canada.  Items small enough to be sent as lettermail are fine though.

Here are 10 spools of lovely embroidery thread.  It is viscose.  Viscose is a plant based material that makes threads that are able to be dyed in the most spectacular colours. 

Each spool is rated at 25 grams so I don't know how many hundreds of yards each that would be.  Three of these still have their original plastic wrapping.  Two of them weigh 23g so, they have a bit used.  All others are above that.

Good luck bidding and thanks for looking at another auction from The Mighty Atom.