Both boys (3&5) have been eating green/berry smoothies for breakfast since they were babies. I add raw oats, seeds, nuts as well. They CRAVE this and don't want anything else in the morning.

For snack I send raw nuts, crackers, cheese, always carrots and usually grape tomatoes.

For lunch (for my 5 year old 1st grader) I make casseroles or other meals in big batches and freeze them. Easy to just heat up in the morning. I put it in a heated up thermos before taking him to school. I always have each meal include a good carb (quinoa, brown rice etc) a protein (eggs, chicken, turkey) and 2 veggies. Have a good, healthy, fairly easy system going with this and the boys like it.