I love the ability to make ahead breakfasts that double as healthy, high protein, portable snacks (so rarely including eggs or ingredients that need refrigerated). Granola bars, black bean brownies, hash brown cakes in mini muffin tins, etc. I will try to make enough for the week and then just toss a couple of whatever they are in my bag and I'm out the door.
The idea of make the night before from dinner leftovers is also genius. I would be into that too. Crock pot ideas would be the dream! The quick and easy morning is key.