Lunch cheap and easy.

1. Homemade bean and cheese Burrito
1 tortilla. Cost - $.13, Calories - 170
1/5 can of beans. Cost - $.30, Calories - 80
1/20 package of Mexican Velveeta cheese. Cost - $.19, Calories - 70
Total - Cost $.62, Calories 320.

2. Ginger Ale
Cost - $.40, Calories 140

3. Bag o' Carrots
1 Carrot, julienned (cut into sticks) Cost $.10, Calories 30

Totals
Cost - $.62 + $.40 + $.10 = $1.12
Calories - 320 + 140 + 30 = 490

Notes
This assumes you have access to a microwave for 1-2 minutes to reheat... To make the bean burrito you want to steam the tortilla first, otherwise it's not as pliable and will rip, tear, whatever. Steaming it makes it much easier to deal with.... I used vegetarian black refried beans. The numbers may slightly change for other beans but they should be close... It takes like a little less than half an hour to make 5 of them, including cleaning... I listened to the podcast In Our Time on my iPod shuffle during the time. The discussion was of The Great Reform Act of Britain. Very entertaining... Aside from being cheap, healthy, (the only cholesterol comes from the cheese) and easy to prepare, it's very tasty. Ginger Ale isn't over-sweet like most sodas. Carrots are crunchy and make a nice companion and you can eat them as the burrito cools after you nuke it.