I went on a course a couple of years ago with a lovely lady called C.June Barnes . She taught a lovely texture technique where we machine stitched various white fabrics onto a very fine wool felt or wool guaze and then boiled them in the washing machine. The heat obviously shrinks the wool down causing the top fabrics to scrunch into beautiful textures. Once dried we then proceeded to dye them.
I have several samples which over the next few days I am going to add to, enhance and turn into postcards - they are just the right size.
Note to Sophie - the bubble wrap felting - it's bubbles up so your wool is on the bubbles - they work like hundreds of tiny hands rubbing the fibres!!