Burger Night...What kind of toppings???

My daughter wants to have burger night. It used to be easy: lettuce, tomato, onions, cheese, pickle, mayo and ketchup on a plain white hamburger bun. Now there's so many more options: teriyaki, bbq, ranch, spicy aiol sauce; mushrooms, bacon, avocado, caramelized onions, alfalfa sprouts, egg topping; jalapeno peppers, onion rings, kim chee; white/wheat, sesame, onion, sourdough, pretzel bun. I told my daughter we have to narrow it down. What is your perfect hamburger: toppings, sauces, bun??