From the corner diner to national fast food brands, prices are rising. Bringing lunch to work is a great way to save some money, but it can be difficult to put things together. Bento Boxes (think adult Lunchable) are a great way to simplify the process. With a formula of primary protein, secondary protein, carb, fruit, and vegetable, you can create a variety of tasty, nutritious, filling, cost-effective meals. So what are good examples of each category, and how best to put them together?