Possible Clues:

• Desk item
• One secures documents: soft copy's correct, we held
• Pressing need in the stationery cupboard?
• The rock in my desk's inbox was voted Most Valuable..
• Importance of an essay?
• Rep with page flapping? This may prevent that
• It helps to keep one's documentation down
• Three sheets in the wind, out of control? This can help
• It heavily controls author's output — hence publication delay, we hear