As a father of three, all of these things are great.

Keeping a change of clothes and a couple diapers in the car is another thing to recommend, you will eventually forget the diaper bag, or forget to reload it. Having last ditch emergency supplies is a lifesaver.

I'd add a NoseFrida as another product, those bulb type snot suckers have poor control, and get disgusting on the inside. It's a bit weird the first time, but it works a treat.