I decided to just hit the conbini for dinner tonight. Some rice with egg salmon and something else in top. Spicy fried chicken and a 2 liter bottle of tea. I didn't realize it would cut the picture off.
If you want to live cheap in japan you have to master the art of conbini shopping. Fortunely they have quite a selection. You probably won't find anything you know from the states, but with a little trial and error you find some good stuff.