RITI Printer is a eco-friendly printer designed by a concept of a new ink system
Ok, before I go any farther, I have to admit this is in fact a 2D printer - not a 3D printer. We've seen all manner of complex, common and vile substances used as 3D print media, but not yet coffee grinds.
But one can imagine the possibilties if a 3D version did exist. A coffee cup - made out of coffee!