Especially for street photography: cold shoe extension, modular, customizable.
Included are two cold shoe extensions. One for the Voigtländer Vito iia (def Cold Shoe Extender) and one for the Kodak Retina 1a. Also included are separate files for the female and male sides of the cold shoe so you can create your own setup.
Because the rim on my printer didn't work properly, causing the object to come loose, I added a number of flaps myself. These are easy to remove after printing. They ensure good contact with the print bed.