1: 1. Upgrade your tuna with Greek yogurt for added creaminess. 2. Mix in crunchy celery and sweet apples for extra texture. 3. A squeeze of lemon juice brightens up the flavors perfectly. 4. Trade mayo for avocado for a healthier twist on this classic. 5. Don't forget the fresh herbs for a burst of freshness.

2: 1. Opt for whole grain bread for added fiber and nutrients. 2. Try adding a handful of arugula for a peppery kick. 3. Dijon mustard adds a tangy flavor without extra calories. 4. Swap out regular mayo for a blend of mustard and yogurt. 5. Top with sliced cucumbers for a refreshing crunch.

3: 1. Make a batch of tuna salad ahead of time for quick breakfasts. 2. Add a sprinkle of nuts or seeds for added crunch and protein. 3. Trade lettuce for spinach or kale for added nutrients. 4. Drizzle with balsamic glaze for a touch of sweetness. 5. Serve on a bed of mixed greens for a low-carb option.

4: 1. Try adding diced pickles for a tangy flavor burst. 2. A sprinkle of red pepper flakes adds a hint of heat. 3. Swap out regular bread for a whole grain wrap. 4. Top with sliced radishes for a fresh and peppery crunch. 5. Add a dollop of hummus for extra creaminess and flavor.

5: 1. Top with sliced cherry tomatoes for a burst of sweetness. 2. A dash of hot sauce adds a kick to your sandwich. 3. Try adding a spoonful of pesto for a fresh twist. 4. Serve your tuna salad open-faced for a lower carb option. 5. Trade regular tuna for seasoned or smoked varieties for added flavor.

6: 1. Mix in roasted red peppers for a smoky flavor. 2. A sprinkle of feta cheese adds a salty kick. 3. Try adding chopped olives for a Mediterranean twist. 4. Top with sliced avocado for a creamy and healthy addition. 5. Serve on a bed of quinoa or brown rice for a hearty meal.

7: 1. Swap out regular tuna for canned salmon for a different flavor. 2. A drizzle of honey adds a touch of sweetness. 3. Try adding chopped grapes for a burst of flavor. 4. Top with sliced hard-boiled eggs for added protein. 5. Serve your tuna salad in lettuce cups for a low-carb option.

8: 1. Mix in diced mango for a tropical twist. 2. A sprinkle of curry powder adds a warm and spicy flavor. 3. Try adding toasted nuts or seeds for added crunch. 4. Top with sliced strawberries for a sweet and savory combination. 5. Serve your tuna salad in a halved avocado for a fun presentation.

9: 1. Swap out regular tuna for canned chicken for a twist. 2. A dollop of plain Greek yogurt adds creaminess without extra calories. 3. Try adding diced bell peppers for a pop of color. 4. Top with sliced peaches for a sweet and juicy addition. 5. Serve your tuna salad on a bed of mixed fruit for a refreshing and unique breakfast option.