This is the last batch of sketches from a sketchbook I carried with me (theme: Undefined Variables).
I’ve got two more tiny leather-bound sketchbooks like these but I may take a break from this style of book for a bit. I’ll pick it up again when I think of another programming concept that I can translate into a sketch style.
I also need to get the proper pen(s) again. I’ve been using the “soft” variant pen for these last ones for a change, and it’s much more like a brush pen. This paper is heavily textured which makes the soft nib catch more easily.