Potatoes, Eggs, Wine and Veggies

My goal for the next week is not to live on break alone but on wine. (I wish) No, I have heard from a reliable source that it is possible to live in $3 a day, and still eat well. A few of the suggestions for food ingredients i was given were; potatoes, onions, and eggs. My goal is to try it out for a week and live on mainly those three items, at least for dinner. My task is to get creative...lets hope it isn't just fries!