 Welcome back to Press Play from ABC News Radio, a special about the different ways in which we play. I'm ABC's Jason Nathanson, and often play comes in our free time, that glorious and too often rare time where we decide what we want to do. And many people choose to use that time to collect stuff. Human beings are born collectors and have been since before we left our caves. Finding, acquiring, owning, and appreciating stuff is wired into our genetics, with studies suggesting that up to 60% of us collect something.