Sashiko is a style of Japanese embroidery using short running stitches as a decorative (or perhaps originally to reinforce old cloth) pattern. Traditionally it is done with white thread on dark blue (indigo) woven fabric. If you Google it, there are a ton of examples and some gorgeous more modern designs.
I took a class at Fabric Garden to learn the basic techniques. After a small practice piece, this is what we made:
The leaves are from batik fabric and are fused on with Misty Fuse. It was a fun class and it felt good to walk away with a finished sample. If I want to make this a wall hanging, I just need to finish the edges. The instructor was going to quilt hers in dark blue sashiko stitches around the blue areas (hers was on batting) and then bind it. I may do that as well for more practice. I like the simplicity of it.