I used that previous sketch to make this tile that can be repeated on every side. Not totally refined here yet, but I'm going to work more on this idea. Seems like if we can have tileable textures we can have tileable art too. I've made a Flash example of how this works and I'm going to make other tiles and add a new page of these to this site. Soon. Seriously.

It's all vector so the colors and scale can be anything you want.