For those of us who aren't quite the moleskine ninjas that we aspire to be (yet), Gretchen Rubin of the Happiness Project suggests one scratch paper a day.
I have a "scratch paper for the day." I keep a pad of paper by the phone, and anytime I have the urge to make a note to myself, I discipline myself only to use that pad of paper. At the end of the day, I toss the piece of paper, after copying anything I need to keep.
Since I'm a compulsive note/list maker, this method appealed to me, mostly because it's so dang easy to implement. How do you keep your notes organised? Please share in the comments.