MEC bicycle mirror socket
by plexus, published
This is a replacement part for the socket part of the ball/socket for a bicycle mirror that Mountain Equipment Co-op sells (http://www.mec.ca/AST/ShopMEC/Cycling/BellsMirrorsReflectors/PRD~4011-495/mec-mountain-cycling-mirror.jsp)
You will likely have to print this on its side if you are using FDM as the layers should be perpendicular to the plane the leaves bend, otherwise it will break between the layers. If you print it on its side, you will need to use support. A print on its side is not the best looking but it does work.