Fill your plate with lettuce, greens, or bagged salad.
Add odds and ends you have in the fridge. (Think leftovers, proteins, fruits, veggies, meats, etc.)
Add extra toppings you love. (Cheeses, nuts, seeds, dried fruits, etc.)
Drizzle with oil, vinegar, or your favorite dressing.
Eat and enjoy a deliciously frugal, healthy lunch!