OK, I have a question for the community: I have the Batman '66 series blu-ray box set, the one that came with the Hot Wheels Batmobile, the replica Topps cards, etc. You might remember that the box itself has a pushbutton on the side that played the opening bars of the Batman theme ("Na na na na na na na na Batman!") which I presume was powered by a thin button battery somewhere in the cardboard. I know it's not supposed to be replaceable, but has anyone tried? I'd love to either replace it, or at least get it out of there before it leaks, without doing significant damage to the box, which I really like. I wish I had access to an x-ray machine, or a TSA luggage scanner, so I could get an idea of the insides of this thing, but sadly I have neither of those things. Any thoughts on the best way to proceed?