EARPLANES! They are fantastic!!!
Gummie snacks for take-off and landing.
Juice boxes - so they wont spill the drinks the airline provides
Quiet activities - coloring books, activity books, color wonder, maze books, etc. (with crayons or markers in a zip bag)
L-Max, Leapster educational games or any electronic game, DVD, or Video Now player
Something that they will really love to do that is NEW. Tell them about it, but don't let them see it until seated on the plane. New items always buy you extra quiet time!!!
We let each boy pack a small carry-on with a stuffed animal, quiet activities, snacks, and a juice box in a small backpack. They felt very grown-up with their own bag to carry - but, don't make it too heavy in case you end up carrying it!!!