I have this really old-fashioned leather hand-bound book that I bought in China. I absolutely love it, it's one of a kind (although the paper is not the best for drawing), but I constantly find myself thinking "I am not worthy of defiling this cool-looking book with my feeble sketches!"
Ever so often I will make attempts anyway - and because of the brownish paper it's great for experimenting with coloured pencils...
Also for hard light and highlights I experimented with a white-out pen.
And last, a few sketches of my classmates paying attention in class... I had forgotten that I actually enjoy making these. Since the Drawing Academy I've gone back to that comfort zone of not drawing people; this made me realize I had little to worry about. So you'll probably see more of these.