This is only partially true - you focused on the global and universal and missed the more local. For example, two kids have baseball bats, but except for America and Japan most kids in the world won't have bats, many haven't even seen one ever. The kid from Alaska with his snow sleds and the Italian girl with the cows are two prime examples of a local, native culture childhood style.
Cows are everywhere, and sleds are everywhere where there is lots of snow.
Cows are not local or native to Italy, if anything it shows there is a larger divide between urban and rural areas then what country you live in.
To me it's interesting that kids are not only playing with similar toys, but the exact same brand of toy.
Of course there are some differences, but compared to 50 years ago childhood around the world is starting to look the same.