I usually put a bunch of stuff in my DD's backpack - new stuff that is exciting, and it doesn't have to be expensive. A new little beanie baby stuffed animal, a coloring book and crayons, a few books (maybe Disney ones), the Magnadoodle (travel size) is awesome, a few snacks like animal crackers, goldfish, fruit snakcs and some juice/bottled water. I know you said you're not interested in a DVD player, but I have to tell you, that was one of the best things we have ever bought for travel - ever!! You can always play movies on other devices that you may have - laptop, etc. There's something mesmerizing to a child about watching their favorite DVD that may help your trip be a lot more pleasant, IMO. I'm sure you'll have a great time, happy travels!