Flying Elephants Deli
This little hole in the wall is part of the big high-end Elephants Deli in NW. With grab-n-go coolers, you can get salads, sandwiches, and take away meals, as well as yogurt, and every possible type of chi-chi pop, water, beer, wine, bubbly, etc. Baked goods and deserts wait at the center island. Hot sandwiches and soup can be ordered straightaway in the back. The cost for any of the food items tends to come in shortly before $7, so as long as you can restrain yourself at the drink cooler, it's not an expensive meal.
The drawbacks of the place is that it's popular, and the table situation is tight: like Paris-cafe-tight, not built for our supersized American bodies. Still, you can get lucky and score a table on the sidewalk and watch them tear up the parking lot right in front of you.