Politically incorrect line layout. The backstory: I had to design the line layout of a distribution center, where packages are added to a circular line at one spot, and they go round the circle until they are picked off for a particular destination. I spent quite some time on that design, and got a good solution. Ease of access, lots of space for the operators, efficient use of floor space, quite nice actually. I was just about to present this line layout proposal to management when I took a last look at it and ... it turned out to be a swastika shape! With me being German! Working in a country that was heavily bombed and then occupied by the Nazis in World War II. That's when I decided that maybe I should NOT leave a 30 meter swastika behind on the shop floor as the result of my work.