I actually seem to have better luck storing things in files on my computer than using paper.
Paper usually gets mistaken for trash and thrown out by mom, or it gets marked all over by my brothers and THEN thrown out by mom :/
I had a whole list of all my passwords, Windows CD keys, etc etc on a piece of paper and it got ripped up by my brothers and marked all over with black permanent marker. Mom mistook it for an otherwise blank piece of paper since virtually nothing else besides the permanent marker was visible
Strangely enough, candy wrappers and candy bar cardboard holder thingies NEVER get thrown away, ripped up, or marked on, so to test a theory, I wrote my win98se CD key on the cardboard holder thingie from a Caramello, threw it down in the space between my book shelf and my desk, and it has remained there ever since.