Offer New Toys
It's tough to make much noise when your mouth is hanging open in surprise, awe, joy, and intrigue. What better silence-inducer than a brand new toy to explore?
One of the best ways to create a quiet traveler is to put together a bag of tricks -- somewhat literally. Before you get on the plane or hit the road, gather up some toys, as many as you can comfortably carry, and make sure you've got some new ones in there. A never-before-seen toy can keep a youngster silently fascinated for a good 15 minutes. That's a quiet take-off right there.
Up next: If you've got the cash, go high-tech.