I use pizza sauce, pepperoni, bacon, garlic (bacon and garlic sauteed), red onion, cherry/grape tomatoes, sweet corn.
Im thinking there is something else that I add but I cant cant remember right now. My mates LOVE when I make pizza. I normally chuck a pizza stone in the webber Q and cook it in there. Delicious
EDIT: Chopped mushrooms! Knew there was something else