For me a project bag holds 1 or two projects (max!) and is very small. A knitting bag will then hold the project bag (or 2) and other tools. I’ve wound up converting though, I invested in the Spud & Chloe bag that they sold a limited amount of, I bought it to support the company because I love them, and I was sort of shocked by how much I loved it. When I got it I thought “oh its just a big project bag, thats no fun” and now its my most favorite thing on earth. It’s that project bag thin cotton/canvas type material, and I pop my interchangable kit into it, a little zippered bag of tools, and the yarn and needles for 1 or two projects (not in their own project bags). My other knitting bags are all sitting under my table, un-used, and I have a few variouse project bags around the house, some with project sin them, and many un-used.
So my new favorite thing is a “large” project bag with just my knitting supplies in it, sort of like half knitting bag, half project bag. I think I just totally took myself to a new knitting nerd level by explaining all that. blink