I could tell you the story behind a custom order for a macBook cover, using handspun wool, but it's very similar to things I have said before.
A hankie is a stretched coccoon. It has to be processed to remove the sericin (the glue the silk worm uses in making the cocoon), but then can be stretched into a square and dried. This site http://www.wormspit.com/mawatas.htm shows the process in more detail.
Needless to say, I had to buy myself some hankies. I've had a little play, but would like to dye them first and then have much more of a play.
This coming month we are learning how to make paper from silk. I am very much looking forward to learning more about this wonderful silk.