Me and my bf are going to see my family which takes 5 hours to get there and I'm just wondering what…

Me and my bf are going to see my family which takes 5 hours to get there and I'm just wondering what to do to keep the little one entertained for that long. We can't leave at night because we are renting a car. I have an IPad that I can take for her to watch cartoons. Any advice on what I should take and if I should sit in the back with her or what. This is my first time traveling this long with my daughter.