Traveling with children

Anybody else ever been here? When my two year old doesn't want to do something this is what he does, complete limp noodle to the ground.

So what do you do when you travel with children? I carry a few things to make it easier.
* His favorite snack (fruit snacks)
* A favorite toy and book (that he only gets when we are out and about)
* Wet wipes, lot's of em
* Water bottle
* "I Spy bag" for the car (Make your own!)
* Lunch, I always pack a lunch because kids get hungry at the most inconvenient times

What makes your travels with kiddos easier?