And, as shown before, I ended up using birch wood buttons from the Woodlot. While not what I was planning on, I think they work very well, playing off the reddish tones in the yarn.
And before any of you ask... yep - I wear glasses. Well, sort of. I started wearing them in school because I couldn't read the chalk-board from the back of the room (and who wants to sit at the front?). I wear them to drive now, though my visions is decent enough that I don't legally need them. Mostly, I just use them as sunglasses when the top is down on the car (they are Transitions). The rest of the time, I just walk around slightly blind. The reason I had them on during the shoot was to hide the horrible bags under my eyes from being sick and not sleeping well.