Getting ready for a road trip

How to keep everyone quiet on a drive to the French alps? Ensure their tablets (our old ones) are fully loaded with as much games, videos and music as possible.

Unfortunately already ran out of room on JJ's so need to see what he's willing to lose.

On the plus point I've got a bigger memory card in mine, so no such problems for me.

Although I suspect I won't be able to use it whilst driving :)