I have done so many road trips with my kids solo, but I feel it's harder as they get older--they just don't sleep in the car as much! We're doing a 9 hour drive with a 2 and 3 year old later this week.

What are the best things to keep them contained and happy for a while? I'll download a couple of movies on the iPad but I don't want them watching movies the whole time. I've done the mess-free markers and coloring books/crayons, books, but I feel like they always end up dropping them and it's hard for me to pick up stuff from the front seat. Looking for new ideas.