I was looking for a few interesting things to keep my kids busy if they get bored in the car. I am trying to prepare the kids now for spending more time in the car (so we can do longer road trips). And while technology is great device charges only last so long. I know there will be unexpected delays (we have already experienced this) and sitting in traffic can be hard for active kids.
This is list is focused on things that will engage my kids (ages 8-16). I was mostly looking for things that could be reused over and over, but I am sure there will be a few that you will only print and use once.
I will add to this as I find more resources.