Re: Bags full of the stuff
Best advice ever, for paper, but also works for junk:
Box under desk. If you're unsure whether you need to keep/ file a piece of paper, toss it in the box.
When the box is full, tape it shut, date it, stick it in a closet, and start a new one.
If the box hasn't been opened in x months, toss it in the trash.
Once or twice I've had to dig out something, but it's exceedingly rare.