So, day 19, and this face is drawn with a single line. I found it surprisingly difficult, not wanting to put a line in the wrong place. I guess it has a particular style to it, though, especially with its one eyebrow :)
And elsewhere on my desk, I haven't been able to track down any rubber-stamp carving material except for erasers which are limited in size, so I made some with foam instead. You can see them below along with a page in progress where I've used some of them.