I'm also in 8th grade and I'm a vegetarian so I think I can help. Do you not eat bread? If you do sandwiches and wraps with pbj, cream cheese, hummus, veggies, honey and basically what you want are good. I always pack an apple, sandwich and yogurt. You could pack vegan yogurt, Oreos, crackers, bars, veggies or vegan cheese sticks. Make quesidialls with vegan cheese and pack those. Bring fruit too. Apples, pears, plums, peaches, grapes, raisins, apricots, bananas and kiwi are yummy.