I never leave home without granola bars. Saves me food at the airport, on the plane, and a lot of the time breakfast too. A week's supply of granola bar breakfasts won't take up much space in my pack. Just a few of the benefits:

1. Easy to pack
2. Easy to eat
3. Cheap/light to bring with you
4. No time wasted finding food in the morning

Trust me I could go on. I realize some of you may think I'm crazy, but seriously. Granola bars have saved me from a stressful, hungry day, or from missing my flight looking for food.

Feel free to substitute trail mix, protein bars, what have you.

And now I'll shut up about granola bars...