I am constantly on the go, running kids to and from school, dance, and taekwondo classes. I try to stay organized even when I am on the run with a Munchkin Backseat Organizer, that way I can keep snacks, drinks and books off the ground. This organizer keeps all those things accessible and up off the floor of the car, plus when your child is old enough he or she can reach forward and get things all by themselves.
We have a muchkin backseat organizer on the backs of both seats, driver side and passenger, as well as one on the back of our captains chairs for my daughter who sits in the back. I try to refill them weekly, since we do an after school snacks two days a week in the car when we are headed to classes. The pockets are a nice size and will hold just about anything that will fit in there.