Interesting question, janie!
But I'll be damned if I can easily think of an answer!
I love cream cheese and peanut butter. But I hardly use them in everything.
I also love smoked salmon. Hellmann's Mayo. Butter. Cheese. Spinach.
I suppose the ONE thing I eat every single day is oatmeal. And I top it on alternate days with fresh/frozen blueberries, golden raisins, bananas, frozen mango, maple syrup and brown sugar.
But that's more than TWO things, isn't it? Hee-Hee!