Any tips or advice when traveling with an infant halfway across the country? I have a family reunion in North Dakota and we leave the 2nd and we are driving. I will have my 2 daughters preoccupied with games, food and movies but I know my little one will be cranky in his carseat after the first few stops because I'll be putting him back in his seat. We will be driving 11+ hours the first day then 10+ the next day. Any specific safe toys that help?