I like doing random scribble artworks a few pages down in test pads that you find in stationery stores. I usually just leave them there for other customers or store staff members to find. I do wonder what happens to them: whether they get scribbled over or if someone appreciates them enough to keep.
This one I spent a little bit if time on, as I was waiting on my partner. I was going to leave him, but when my partner saw him, she made me take him home.