Drawings Without Paper

Lately we've been experimenting with different mediums and materials to create drawings.  Wire, wood, wax, plaster, resin, and concrete were all materials available to create these "drawings without paper".  My final two drawings are comprised of plaster and wire as their mediums.  I chose to "draw" my underground floor plan in a plaster cast and a section axon of a chunk of my building in a wire frame.  Here's the results: