I had cold leftover sesame-chili noodle soup with tofu.
It isn't very good cold.
Pizza is better.

In general though, I just do coffee for breakfast and graze in front of the fridge- anything is fair game- American cheez singles, leftover spaghetti, olives, pizza, anything that requires no preparation.

When I'm feeling sassy, a bagel from the local coffee shop, where they put pesto, sprouts, and avocado on it, is the BOMB DIGGITY.