Add fresh veggies: Such as avocado, cucumber, carrots, bell peppers, radishes, or red onion.
Add fresh or dried fruit: Such as fresh apples, berries, grapefruit, grapes. Or dried cranberries or apricots.
Add jarred veggies: Such as sun-dried tomato, roasted red peppers, or artichoke hearts.
Add beans: Such as chickpeas or white beans.
Add croutons.
Use a different cheese: In lieu of Parmesan, feel free to add crumbled blue cheese, feta cheese or goat cheese.
Use different nuts/seeds: Such as pepitas, pine nuts, walnuts, pecans or sunflower seeds.