The Out Post
The Out Post is heaven. But I wish it were still called the C-store. Many students (including some first years, who might otherwise be confused by the big sign saying "out post") still call it by the original name.
You buy food and condoms with your Dining Dollars there. Pricing is on par with what you would find elsewhere, but Walmart it is not. It does have a lot of vegetarian/vegan/organic options, and a big ice cream selection.
Monday through Friday from 11:00-1:30 you can trade a meal swipe for grab and go food that actually is quite good, like taco in a bag.