How about other garnishes such as chili, cheese, and sauerkraut? The only way I will eat the latter is either on a hot dog or a Reuben.
When I was a child, there used to be a great, old department store in Washington named Lansburgh's. They had a mezzanine dining room that looked out over the ground floor shopping area so that you could people watch as well as eat. My favorite lunch there was something called a Hot Dog Special. It was a regular hot dog topped with loosely chopped raw cabbage and Thousand Island dressing.