There are free software programmes that you might want to try. I've recently started using GRAMPS and find it very useful. It utilises notes, images, and just about everything you would have pertaining to your research. As someone who tends to leave notes here, there, and everywhere it's like having someone keeping my desk clear - but always putting stuff where I can find it.
Added; I tend to store paper in a file cabinet under the type of record with sub-folders for surnames. However, I scan everything and make a note with the scanned image as to where its physical location is. Kind of a personal fail-safe.