Check out this photo essay by Gabrielle Galimberti of children around the world with their favorite toys. While Galimberti says, "At their age, they are pretty all much the same; they just want to play" he also notes that there were a few interesting differences:
Galimberti found that children in richer countries were more possessive with their toys and that it took time before they allowed him to play with them (which is what he would do pre-shoot before arranging the toys), whereas in poorer countries he found it much easier to quickly interact, even if there were just two or three toys between them.
Aw come on rich kids. Share your shit!