My kids like raw vegetables and have never complained about having them in their after school snack. That is not to say that they don't reach for the cookies or fruit snacks first. They're weird, but not that weird. However, they happily munch on veggies or fruit knowing that dinner is often hours away.
This is the afternoon snack I put together for Zachary the other day before track practice. Raw green beans, carrot sticks, red bell pepper slices, cucumber spears, and strawberry yogurt in the middle. Not pictured are whole wheat crackers, a granola bar, some graham crackers, and some apple juice, all in reusable containers of course. When packing their snacks, I load them up on protein and vegetables, particularly when we are en route to sports practice. On the way there they have a few bites, but on the ride home will finish everything in sight. I don't mind them filling up on this stuff before dinner because it's healthy and buys me the 20 minutes I need to get dinner ready for them upon returning home.