I have a nicely-filled box of cardboard rectangles cut into postcard size, 4.25″ x 6″. So, when I’m painting, and I have some extra paint on the brush – I sometimes keep a pile of these ready to finish off that paint. Then, later on, I take these cards and see what I can do with them. I have a supply built up and you can see the way my mind goes from session to session in what I did to these cards. Here is an initial group, from about a month or so ago.