Whenever I go to doodle, I usually begin with an OCR-tan or two. And since I very rarely throw any of my artwork away this means I have a stockpile of random OCR-tan drawings/sketches just lying around. The stuff that I really dig, I usually turn into one of the images previously posted in this thread, however the majority of what I draw is never actually seen by anyone else. That stops today.
I just spent the last 2-3 hours scanning, and compiling most of my OCR-tan doodles and sketches from the past couple of years. They're not colored (sorry), nor are they masterpieces by any stretch. In fact, most of them are quite sloppy, but hopefully this will be a small consolation for the lack of other tans. =P
Click for the stupidly large version.