Salad

Pickled vegetables (olives, roasted peppers, artichokes, capers, or really anything from the "pickled" section of the grocery store) are a good addition for flavor.
Nutritional yeast is a good topping for salads because it adds a lot of flavor and nutrients without adding a lot of calories.
Other seasonings that I often add are onion and garlic flakes, red pepper flakes, and various dried herbs.
Hummus is a good alternative for salad dressing and there are a lot of flavors of hummus available in the store now.
Dry roasted broad beans or other legumes are good to add some crunch and protein (they are also delicious as soup crackers). These are also available in different flavors at the grocery store.
Oh also I really like putting scrambled eggs on top of salads. Although any type of eggs would work.

I make sauerkraut. I've tried cabbage with fennel seeds, purple cabbage, and now cabbage/carrot/garlic. It's great to add to lettuce or spinach. Today I did lettuce, spinach, cilantro, cucumber, grape tomatoes, onion, shredded mozzarella, chickpeas, habanero mango seasoning and lemon juice, and a little bit of leftover sauerkraut. Delish!