Btw, sketchbook doesn't only mean the paper stuff- it includes anything of the "doodle" category. like these

Also, the Really Useful tier has access to sketchbook pages now www.patreon.com/c/sleepyhenry

Original by the_angler_mann on twitter, the second one is a screencap from Frasier I no longer have

And also this which has laid dormant in my files for a few years