Don't leave important, sensitive, or confidential material lying around the office.  Common printing areas are frequented by people coming and going.  Often you'll be in line to pick up your documents and others may handle them before you.  This can lead to unnecessary information disclosures.  One manager had a print job disappear, and had e-mailed the whole floor about it.  The pages never turned up.  As a rule, always use the closest print station, or a dedicated printer for confidential information, and go get it right away!