Mine are also organized by subject and category. Plus I have 20+ notebooks for patterns, techniques, quilt history and so forth that I've collected over the internet and magazines with patterns I wanted to keep. I use those plastic covers to keep them in. I am just one of those people that has to be organized or I go nuts. That's not to say I don't spend an unbelieveable amount of time trying to find something I'm looking for as organized as it is. I also use the post its for really special things so at least those are easier to find.