As much as the obvious reflex is to think that "oh we should move BACK to a more austere, toy-less environment." It is important to remember, that children that grow up in nature are surrounded by thousands of "toys". I remember camping by creaks as a child, and finding there far more "toys" than in my play box. Rocks, sticks, bushes, leaves, mud, bugs, animals. Somehow, I still managed to focus for hours trying to damn the creak. So I don't really believe that more toys = shorter attention span. It must be something about the nature of these artificially created toys that makes them less engaging.