There are so many ideas but I guess as others stated a few more details would be good.
Sandwiches - Cucumber with a tangy cream cheese spread. Season the cheese with some roasted garlic, freshly chopped dill, salt and black pepper
Lettuce Wraps - Fill them with freshly chopped veggies (thinly sliced red, yellow and green bell peppers, some bean sprouts, handful of red cabbage, fresh cilantro, chopped peanuts and a sweet and tangy dressing made with soy sauce, brown sugar, some chili sauce).
Black Bean Wraps - Canned black beans, frozen or fresh corn (blanched and drained), chopped tomatoes, chopped red onion, cilantro, lime juice, garlic chopped and a chili if you like heat chopped. Serve in a tortilla and top with some shredded cheese.
Tabbouleh Salad - Bulgar Wheat soaked for 2-3 hours, Drain and add finely chopped cucumbers, freshly chopped parsley, freshly chopped mint, some chopped scallions, salt, lemon juice and some olive oil.
Veggie Sandwiches that are a staple in my house - First make a cilantro and mint chutney (1 bunch of cilantro, 2 cloves of garlic, 1 green chili, salt, lots of lime juice, 1 cup of mint and 2 tsp of sugar- Add all of this to a food processor and grind it until a nice paste consistency)
Spread it on regular sandwich bread and top with sliced boiled potatoes, sliced cucumbers and sliced fresh tomatoes). It is excellent