This post from Feeling Stitchy put the idea of combining embroidery and tie-dye in my mind.
Further searching revealed that there is a Japanese dyeing technique similar to tie dye that also uses the indigo and white color scheme - shibori. Here's a beautiful example:
So much inspiration for one post! Hopefully soon I'll be able to post a sashiko project of my own.
Image credits: Dungarees via Sanforized / Scarf via Design*Sponge / Bunny stitched by Sandy Chidester, pattern by isewcute via Feeling Stitchy / Shibori via Folk Fibers /