Sashiko has always been popular in Japan and regularly undergoes revivals here in the States. Looks like we're in for another try with this age-old art. Many people find that after working with bright prints and complex pieced patterns, there's something soothing about the simple in-and-out of sashiko stitching.
Call it the Zen side of quilting.
Recently I taught a sashiko class and the five students worked diligently at learning to handle the sturdy sharp needle, with the aid of a thimble, and had to un-learn trying to get tiny stitches--as one does with hand quilting American-style. We worked on pre-printed indigo fabric (the printed designs wash out) and stitched a sample of four different sashiko patterns.
I made a sample wall hanging in the Circles of the East pattern showing them how they might use their sashiko stitched fabrics in a project. Very cool. One warning: sashiko is addictive!