Man, I'm out of it. I have 4 and 6 year old boys and I've never even heard of skate socks, Pixo's, Benderoos, Moon Sand or most of the other things mentioned in this thread.
Maybe it's cause they don't watch much TV and when they do, everything's on the DVR and the 6 year old knows how to ff through commercials.
All they want are Legos and Bakugons.