It has been five years since we last took a family vacation with just the five of us where we had to fly on an airplane. We decided it was time to go someplace warm for the winter. So we headed to Huntington Beach, California! I obsessed for three weeks before our flight about how to entertain three kids not only on the 3-4 hour plane ride there and back, but also during the downtime we would inevitably have in our rental house. The kids didn't have access to all their usual toys and art…