Indigo Dye Day and Shibori Weaving, a set on Flickr.
The Vashon Spinners Rock and the Vashon Rigid Heddle Weavers have an indigo dye day - handspun yarns, carded fibers, silk scarves, and Shibori woven scarves all go in the pot and turn blue!
OK, the pictures are really small here, but if you click on the link to the flickr set, the pictures are bigger and if you look at each one individually, it has a caption - and there are a lot more pictures! (This "share this on blog" business is a little limited, it seems to me)