Writer/artist/poet/collagist/speaker/inspiring internet dude Austin Kleon credits Lynda Barry with changing his artistic life.
Inspired by Barry and other artists, Kleon has developed his own notebook practice over the years. This guy is a really dedicated notebooker! He keeps THREE notebooks going at the same time (a logbook, a diary, and a commonplace diary). Here are his posts about his notebook practice.
In Syllabus, Barry recommends pasting/taping stuff into your notebook. She expects students to fill up 3 to 4 composition books over the course of a semester. Kleon similarly puts in lots and lots of stuff, from notes taken when listening to podcasts, to collages, notes to self, cartoons, doodles, & scribbles.
Here’s a more-or-less random example he’s posted online:
I notebooked from about 13 to 37, stopped from 37 to 53, and have been notebooking the last few years (~5ish). I don’t think I’ve ever completed the equivalent of 4 notebooks in a semester. (One a month?) I also wasn’t doodling, drawing, sketching, and scribbling so I’ll see if I can pick up the pace this cartoon sprummer.