I used to do really craft based work. Somewhere along the line I stopped working with fibre quite as much, and started using alternative materials.
Mordant printing uses a thickener and heat to selectively place mordants (In this case I used alum and iron) into fabric, so when put into the pot, the natural dyes adhere to the placed mordant.
I used a price of cork with as string wrapped around it to block print mercerized cotton, later dyeing in logwood. I stitched it into a simple curtain for a room in our home (with a crooked door frame).