Yogurt and granola, with a side of nuts and cheese for an portable, decent protein, heavy snack/light meal. Or, salad with chopped lunch meat and some cheese on top, so I can again get some easy protiens. I also keep some decent frozen meals in case I'm short on cook time and need a hot heavy meal. There are work gaps where I can barely spend time at home and the bagged "family meals" of pasta or mixed veggies are awesome portioned out for multiple meals.