Buy frozen fruit, make smoothies for breakfast. Easy, tasty, and not particularly expensive.

http://www.foodnetwork.com/recipes/alton-brown/buff-smoothie...

Since going vegan, that's been my nightly ritual: throw frozen fruit, bananas (one large or two small), juice, and vanilla soy milk in the blender carafe and put it in the refrigerator. I like to add ground flaxseed for the ALA as well.