I also did pressed pennies from all over WDW to signify important things that I did that I'd want to scrapbook later.
On my trip in January, I was there with some friends and their parents as well. All four of us "kids" (we're all 22 years old and older) went from country to country and put on their signature "hats" and took a picture in them. We have:
Mexico-Giant Sombrero's
Norway-Viking Hats
China-Rice hats
Germany-black "guard" hats
Italy-orange ski caps
USA- various red white and blue hats
Japan-Pokemon character hats
Morocco-Fez's
France-Beret's
UK- Peter Pan
Canada- Moose hats
I then scrapbooked each picture on it's own page in an 8x8 album and titled the scrapbook "The Mad Hatters do Epcot" (JoLee's brand has "destination" stickers that worked perfectly on the pages, I found a set from almost every country in Epcot. I see you're from Toms River, go to your local Rag Shop or Michels to get the stickers, I'm a town or two over, I know they've got the stickers, that's where I got mine)
Here's the pictures from that trip, so you can get an idea of the hats (scroll down to the last pic's)
http://community.webshots.com/myphotos?action=viewAllPhotos&albumID=543408248&security=rFHxyG
You could also do the same thing, and maybe have your son take a picture with a cast member from each country. They make the Epcot Passport where you can go from country to country and they sign something in their native language. You can then glue the passport right to the scrapbook.
They also have Kidcot funstations in each country where your son can color a mask, then add a little dicut to it in each country. Take a picture of him "crafting" in each country and do some pages on that.
One last thing - they also sell a set of coins from the countries from Epcot. They do come packaged nicely, but I'm sure you could cut it and get the coins out to decorate a page.
Don't forget to take at least three of every pamphlet, one to cut stuff from the front of it, one to cut stuff from the back of it, and one to keep nice to put in a pocket or something in the book.
From one scrapbooker to another--I hope this all helps!