1: 1. Choose high-quality tuna for an extra boost of protein. 2. Add crunchy veggies like celery and red onion for texture. 3. Use Greek yogurt instead of mayo for a healthier twist.

2: 4. Swap out traditional bread for whole grain or lettuce wraps. 5. Don't forget to season your tuna salad with salt, pepper, and herbs. 6. Enjoy your sandwich with a side of fresh fruit for a balanced meal.

3: 7. Mix in avocado for a creamy and nutritious addition. 8. Opt for low-sodium ingredients to keep your sandwich heart-healthy. 9. Meal prep your tuna salad ahead of time for quick and easy mornings.

4: 10. Experiment with different toppings like pickles, olives, or nuts. 11. Spread hummus or mustard on your bread for extra flavor. 12. Pack your sandwich with plenty of greens for added vitamins and minerals.

5: 13. Use a whole avocado instead of mayo for a creamy texture. 14. Try adding a squeeze of lemon or lime juice for a refreshing touch. 15. Don't be afraid to customize your sandwich with your favorite ingredients.

6: 16. Incorporate diced apples or grapes for a sweet and crunchy element. 17. Opt for whole grain bread to increase fiber and keep you full longer. 18. Mix in a dash of hot sauce or sriracha for a spicy kick.

7: 19. Swap out traditional mayo for a healthier alternative like Greek yogurt. 20. Top your sandwich with sliced tomatoes or cucumbers for added freshness. 21. Consider using canned tuna in water to reduce excess salt and fat.

8: 22. Layer your sandwich with nutrient-dense spinach or kale leaves. 23. Pick up fresh herbs like parsley or dill for a burst of flavor. 24. Play around with different bread options like wraps or pitas.

9: 25. Add a sprinkle of nuts or seeds for a satisfying crunch. 26. Consider using tuna packed in olive oil for extra richness. 27. Don't forget to season your tuna salad with herbs and spices.