That's a great idea. Let me know if you find anything!
Maybe I will invent something!
Can be very simply and "elegant" as it doesn't need to charge or anything, just hold the darn things and have the same effect as the "built in" video screens that some cars/suvs have out of the factory.
The screens are the perfect size for it and the kids (mine are 8) can reach the screen to either use the touch screen and/or pull it our of the holder.
I'll get on it if I can't find anything - and make it "expandable" for the 10" tablet!