Breakfasts
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Simple, cheap: oatmeal with peanut butter, sometimes with maple syrup, and soy or hemp milk
Quick: Whole grain toast with hummus and tomatoes, or avocado and nooch (nutritional yeast)
Big: vegan sausages and fried potatoes (with ketchup or bbq sauce, sometimes with juice on the side)
Fancy: vegan french toast or restaurant meals (like tofu scrambles with vegan biscuit and gravy)
Lunch
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Easy: smashed chickpeas with avocado and lime juice, salted, on sandwich bread with dill or cilantro; piece of fruit
Medium: Hot soup with a green salad with veggies, tofu, seeds and dressing, and crackers
Terrible: Clif bar or granola bar (better than being hungry!)
Other: refried beans w/ rice and guacamole (I live in California); pasta dishes; ramen noodles; bean burrito; veggie dog
Snacks
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Cheap: pumpkin seeds, dried fruit, saltine crackers, sunflower seeds, nut butter, in-season fresh fruit
Pricey but fast: Clif or granola bars; packets of fancy vegan chocolate hazelnut butter; chocolates; fancy fruits; fancy juices or smoothies; muffins; cookies; etc.
Other: hummus and raw veggies; cold cereal (like Special K Red Berries) w/soy or hemp milk; avocado w/salt; nuts
Dinners
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Cheap, easy: pasta with oil, marinara and nooch; rice with beans and frozen or canned veg; ramen w/ peanut butter, soy sauce, Sriracha and lime juice (I really love this dish); split pea soup w/ toast; avocado toast w/nooch and tomato
Pricier, easy: Daiya mac 'n cheez boxes; take-out from restaurants (pad Thai, burritos, veggie dogs, vegan sushi, Vietnamese pho, kale and mushroom hand pies, tempeh or seitan sandwiches, veggie burger w/french fries, vegan pizza, etc.)
Fancy: Have a look around, if you know how to cook, the possibilities are almost endless
I've given some general examples from my life based on my time management and income at the moment. Right now I'm learning to eat on a budget so come back in six weeks and I might have better answers for budget meals.