I have a small to medium sized back-pack that rolls up nicely and tucks away just for carrying whatever I may happen across.
That's cool Seneca. As long as it has good stitching, you can't beat canvas. Just found out my mother in law is here for another week and a half. Might talk her into making me one since I have the canvas.This is the one I use,
Amazon.com: Original Heavyweight Classic Messenger Bag Olive Green: Clothing
It's a good sized bag that's well made from heavy duty canvas. I like that has 4 external pockets leaving the large main pouch for forage goodies. The 2" adjustable strap is a cotton weave and very comfortable for sling or cross body carry. It comes in other earth tone colors too.