Whole wheat tortillas or Ezekiel wraps,
a can of vegetarian refried beans (read the ingredients carefully - up here in Canada PC has a delicious fat free one that is clean)
clean salsa and/or chopped pepper, onions, and tomatoes.
Optional: low fat cheese
whatever fruit is kicking around
This is our to-go meal for the car if we are in a pinch
I have a big variety of these based on what I have on hand
Whole wheat organic pitas
shredded low fat cheese
~tomato sauce, steamed broccoli, grilled chicken
~clean bbq sauce, grilled chicken, red onion, hot peppers, red peppers
~refried beans, salsa, peppers, onions, cooked ground turkey (optional)
~tomato sauce, cooked chicken sausage, mushrooms, finely chopped spinach
~tomato sauce, ham w/out nitrates, pineapple, peppers
Breakfast for Dinner
Nut butter and banana sandwich, glass of milk
These are just a few ideas to get you started. Once you start thinking this way, you will come up with your own fail-safes for "that kind of day". I nearly always have leftovers on hand and it is a simple matter of popping them in the microwave. It's very important to make your fast food substitutes tasty and appealing,though, or you run the risk of "There's nothing GOOD" being the refrain.
Clean Eating - staying on plan is all about prep and creativity!