Here are some recent sketchbook pages done on a cheap craft paper. Its a small sketchbook I work in when I feel like my regular sketchbook work is getting stale or if I feel like I need to do some academic-type studies to keep my rear in gear.
As with the regular sketchbook, no eraser to make myself commit to a line. Just playing with working on a mid-tone surface, different pens and pencils, line vs shape, etc:
Chris