A bit of watercolor on Yupo paper. I love the way the colors ebb and flow with a life of their own on this paper. It is also very easy to erase. You can wipe color off very easily to get back to the white. It isn't really paper but slick and kind of plastic-y. Yupo is actually polypropelene.
Drawing with pencil on it is thrilling. It reminded me of drawing on a litho stone all those years ago. That alone was ridculously satisfying. I used the Derwent watersoluble sketch pencils. Yupo and watercolor is a fragile marriage. The paint rubs off even when completely dry.
I'll play around and see what it can do. Maybe try some varnish that would make it work in bookarts.