My son who just turned 8 is very imaginative.  We have always used a theme for his parties, so this year he wanted to "travel around the world".  At first I was intimidated by this, but it soon took over!!  We did a station for each country we used.  We decorated the table in the colors of that country, did a craft for each, and played a game.  Ex.. Mexico, we played the mexican hat dance game, and made maraccas. We used 6 countries in all.  As the children entered, we took their passport photo with a poloroid, in front of a giant world made of paper, then placed it in their passports where they could get it stamped with a different stamp at each country. Ex..American flag for U.S.A., Panda bear for China.  There treat bags were brown paper bags with handles that I drew on to look like a suitcase, and I put "I traveled around the world for Walkers' birthday." I filled them with things that represented the different countries.  Ex...worry dolls from India, American flags for U.S.A.  The cake was a plain sheet cake divided into squares (as if for a baby shower) and I found small flag pics from all the nations. People are still telling me I will never "out do" this one.  Everyone, including the parents had a wonderful time, 45 in all!!