For a boy, the road quilt is it!! Add a couple of Hot Wheels and he will be in heaven!!
My grandson, about 4 years old if I remember right, was flying back East my daughter. This was before 9-11 and "airport security", when the friendly skies were still friendly. He wanted to take his cars, so she told him he could take any toys that fit in his child-size pull suitcase. BUT he had to carry/pull it himself. I'm sure everyone has already guess, slam full of Hot Wheels and nothing else!!