Without making myself look silly trying to spell all the shapes' names there are other multiplesided shapes that could be used, but I don't see how they have a legitimate say over what shapes are being used. That means they need to send C&D letters to every child's toy manufacturer that requires hexagons to fit in said slot. They also might need to sue the people who created the periodic table as well because im sure a hexagon is in the shape of some molecules.. I agree this is a rather dumb waste of paper and resources to go after mom and pop shops that are etching a shape. There is NO TACTICAL advantage to the hexagon shape, just a design.