The kitty's mouth is a pocket and the twins are always wanting to "feed the kitty".
I made myself a bag as well. It is a messenger bag that turns into a backpack. (It looks a little wonky hanging up but it's not. I promise.) It has a padded pocket for my laptop, pockets for my Kindle, phone, and all the cords. I have no link for this. It is something that I designed myself.
We also have to take a packed lunch with us on co-op days. I bought a large canvas cooler on clearance at Target and made some snack bags. Here are some of the ones I have made. The second one is pretty big and can be used for sharing.