It might be time to turn off paperless billing and start writing to your pen pal again. Gustave ($81) is a stainless steel, 3D printed letter opener created by Berlin-based 3D printing label, LimeMakers. Created in collaboration with artist, Michiel Cornelissen, this desk piece was created using complicated engineering and intricate designs that pay homage to the Eiffel Tower. As one piece, the Gustave comes in either matte black steel, polished grey steel or polished nickel.