While I've been laid up recovering from knee surgery, I've lately been drawing on toned paper in the easy chair. For the drawing above, I used a Canson toned paper with a value of six on a scale of 1 (white) to 10 (Black). This works well for a predominantly dark scene. The lightest passages are painted with a off-white acrylic. All other passages in the sketch are either the toned paper or penciled-in. For a snow scene I use a paper with a value of two. This approach is so simple in terms of resources and setup, I plan to take it with me plein-aire painting when I am mobile, hopefully in a month or so.