When the FOSSGIS conference was held in Freiburg, Geofabrik produced a folded city map from OpenStreetMap data. 1,000 copies were printed and distributed.
The DIN A3 sized map has an overview map on one side, and a larger city map on the reverse.
At the time, producing the map comprised these steps:
Click on one of the images to enlarge, or download the printing PDF here.