I found the perfect pencil case. It's actually a case for a removable car stereo, but I don't have that car, let alone the stereo, anymore (if I ever did).
Inside are the pencils I mentioned once. Notice that I've got them tagged with tape so I can tell what lead type is in each. Also, extra lead and a kneaded eraser.
And now a couple pics of the Genius At Work. The page sizes seem to be almost exactly how much room I need to explain an idea and draw an illustration of it.
The only thing that could make this better would be if it were exactly the same as it is now, only it also uploaded an electronic version automatically. In vector format. Also, it would be made of ponies.