For a couple years now, I've been using little mini-comic sized books, made from scrap paper from the copy shop, folded and stapled, to keep focused each day on the day's work. Or to free-write and warm up. This is the latest one, just finished today. I haven't been numbering them, which is unusual for me! I also use the same format to write and take notes for the bigger projects. Now you know, right? What's the lesson here? I don't know. For me, they're less intimidating and overwhelming than sk.books or moleskines, and cheaper, and you get to the end faster. Also, they're conveniently proportional to the proportions of the comics pages I draw. Whatever works.