Heh, I remember this one. I had a trip out to Indiana for work, but before leaving I asked my roommate if we could stop at the art supplies store so I could pick up a new sketchbook. Got this lil 5x7 devil that I carry around with me in my satchel all the time now.
Sketch page from waiting for my plane in the terminal.
Done with pencil, pen, paper, and eraser.