I entered the Moleskin 2.0 Exhibition contest. My idea is to use the fore-edge of the notebook. When you fold the notebook length-wise (when the spine practically touches the long edge of the back cover), the fore-edge of the pages fan out. Only when the notebook is folded this way, does a subway map clearly appear. This is due to the fact that the map is printed on the edge while the notebook is positioned like this. You can hide the fact that you are consulting a subway map and be spared the embarrassment and scorn from locals. It’s easier to show you than to explain it.
And his other handmade work is pretty interesting too, so it’s worth a trip over to his site.