I have been mailing fabric for a long time and the PO knows it is fabric and they don't charge me a package rate! If you live close enough to a different post office go there. If not just keep putting them in the bin. I think a slip of fabric is not a package. Send me a letter with it, if it make you feel better.. I did get a F8 wrapped in paper before it was put in plastic wrap and I had a hard time telling that it was a squishy. Can't remember who sent it off hand but I think I might send my fabric out that way next time.