Whatever my fiancée packs for me. It's always a surprise.
Jealous~~!
I usually switch it up between commercially prepared frozen meals and home-made left overs. Some of what I've been eating over the past week:
-Amy's organic black bean burrito: $1.75
-Homemade slow-cooker chili: ~$15.00 for 4.5 quarts = ~$2.00 per meal
-Homemade salad with nuts, dried fruits, and sundried tomatoes: $3.00
-Lightlife frozen meals: $4.00
-Odwalla bars: $1.00 (especially when certain attendings with never-ending rounds come on)
-A piece of fruit; whatever's in season.
-40oz homebrewed white tea (one container of loose leaf ~$15.00 can last a month) in a non-plastic container (I like klean kanteen)
-Bran cereal, frozen raspberries, and unsweetened chocolate almond milk for breakfast.
Back in my meat-eating student days, I used to love packing all sorts of wraps:
-Turkey wraps with lettuce, tomatoes and sliced cheese
-Hummus wraps
-Chicken deli wraps with mushrooms
-Pastrami wraps
-Snacks would include a wedge of laughing cow swiss cheese (or muenster, gruyere, brie...), crackers, peanut butter on bananas/apples. Greek yogurt with honey used to be a staple since the protein keeps hunger at bay until mealtime (also cheaper if bought in bulk).
-Water