Lunch: I eat broccoli and carrots with some dip. Salads are also good (avoid sugary dressings though!).
Dinner: A meat and vegetable side. Tacos with low-carb wraps.. Pizza made of mozzarella cheese dough. Diet soda is okay on Keto. Obviously water is the best thing for you.
My favorite site for getting tasty keto-friendly recipes: http://www.ruled.me/keto-recipes/