Road trip must-haves?

Me

I'm taking a 3-4 day road trip (about 22 hours of drive time) with an 11 month old in a couple weeks. Any product suggestions to make life a little bit easier?

I was thinking of getting packing cubes to make the overnight stays a bit easier. Maybe a backseat car organizer to hold toys & snacks? One adult will be riding in the back seat to try to keep her occupied. Any suggestions or specific product recommendations are very much appreciated!