I use a north face back pack. Love it!!! It has four different compartments and some compartments have more inside. I can carry pretty much anything inside. My backpack holds a sippy cup on one side pocket and a bottle on the other. I also carry diapers, wipes, a pair or extra clothes for both kids, my infant carrier, toys, snack food, my wallet, pacifiers, makeup,blankets, camera,and so much more. I gave up on my diaper bag when my first born was about a year old. It wore out my shoulder,the zipper would often bust when it tried to stuff it with so many essential items, and when I needed to find something quick I couldn't even find it. I bought it at REI. Was not cheap, but very well made and I did get what I paid for. Anyways, hope you find something that suits your needs. Good luck!