Tuna and Crackers Lunch/Snack Box

Name: Tuna and Crackers Lunch/Snack Box
Ingredients: 1 can tuna; 1/2 tbsp mayo; salt (to taste); pepper (to taste); 2-3 romaine leaves; 1/3 cup tomatoes (sliced); 1/2 cup grapes; 7 crackers; 1/4 avocado (sliced)