I am always wanting to try new things/food combinations and some that people have mentioned to me in the past were hits and others were... acquired tastes I presume haha. Friends suggested: putting hotdogs in spaghetti, putting pasta sauce in mac & cheese (ALL my old coworkers used to do this), and some things that are popular in different countries like mixing Sprite or Coke with Orange Soda or dipping fries in mayo.
The most unusual things I do are pretty tame: putting Goldfish crackers in my soup and making taco meat and eating it with plain sticky rice (we call it "taco rice" and eat it about once a week!)
I want to hear more!