We're about to take our very active 8 month old on a 2,000+ mile road trip to visit her grandparents. She is in constant motion every minute she's awake, and I'm starting to worry about how stir crazy she's going to get strapped in her car seat for so many hours. Aside from making frequent stops, which we're already planning to do, do you have any tips for keeping an energetic LO happy during a very long car trip?