I'm constantly doodling on folded up pieces of paper that I carry around in my pockets. This one ended up having a nice three-panel pattern. The blue ink was an afterthought/accident.
This is a good one. I started by folding a piece of paper twice and then running my pen along the creases and then made two boxes.
My doodles tend to start in the center and spiral outward. The flower-like shape in the lower right began with the circle in the center. The shapes with rectangular centers were begun by making quick zig-zags between two fingers.
This one reminds me a little of a Japanese noren - the half curtain that hangs over some doorways. In part, that may be because the color of the ink is close to the traditional blues you see in some Japanese textiles.