Here's ours:
I-95 Exit Guide
Binder with hotel on the road confirmations, restaurant ideas (non-chain) menus, directions and places we'd like to stop along the way
DVDs for the car player
Enough
money for tolls
Pillows and blankets, disposable bowls and trays for food or reading supplies
Prescriptions and OTC headache, stomach and car sick
medicine
GPS, even though we use Google Maps for traffic and info, we like the display on the GPS that tells us what time we'll arrive at our destination, our speed limit, etc.
AAA card, jumper cables, emergency road kit
Multi port power thingies for front and back power port. At least 3 plus a USB for the front, plus another three for the back. We also have one that is an electric cord and USB that plugs in the car port. So we can charge or use almost any electronic device.
A portable WiFi hot spot. We got ours from
Walmart for Virgin Mobile. We pay $50 for a month and can connect up to 5 devices. So we can all be on our phones, tablets, whatever without using a data plan on each thing (plus the tablets don't have data so this makes them usable on the road)
If I think of anything else, I'll let you know