Waiting is the hardest thing we ask of small children, and we ask it constantly — at the doctor, at the restaurant, in the back of the car. A sheet of paper solves more of it than a phone does.
This is not a virtue argument. A screen ends the wait for the child but not for you: the handover back is its own fight, and the child arrives at the table already spent. A game on paper keeps them at the table, keeps you in it with them, and ends without a negotiation.
Games that need a pen, a napkin and nothing else.
Games that survive an actual long drive.
Hand it over without losing the toothbrush.