my latest favorite for my toddlers is whole wheat pita bread, cucumbers, bell peppers, and cherry tomatoes serves with a big blob of store-bought hummus (my food program accepts that as a protein). They love it! I cut the pita in 8 pizza shaped slices. You could add some cheese slices if that's not enough food for your group. Since mine are toddlers, I'm a little limited on my raw veggie choices yet, but you could also do others.
How cute is this? You could modify it.