A.R.
The portable DVD player is a must-have. It also comes in handy when you're stuck in the airport waiting for a flight. Make sure it has a good, long battery life. We also made a big deal out of getting juice with a straw from the flight attendant, to have with the pretzels we'd brought along. I'd recommend buying one or two books about flying on a plane before you go. That was a big help for us.