I agree with Andy's comments. Light is a big theme! Also hats. Here is some more of the Thomas oevre, with some other pics thrown in.
Here Grandma Nancy and Grandpa Doug are amused by some ancient Egyptian humor.
Our tour guide Mohammed, who was going to impart his knowledge no matter how many people were throwing tantrums or falling asleep.
Here Emmett prepares by the Nile for future matches with Grandpa Peter: