(noun)- Items that you notice around a co-worker's home that obviously came from the supply closet at work. Items like, stationery, oversized steel wool pads, gallon containers of handwash soap, commercial sized paper towel rolls.
When noticing these items, you are quietly angry that your co-worker got to them first, and that you didn't get "dibs" on them.
Sally: "Wow Jackie, what are all these diblings doing all over your house?"
Jackie: "It's no big deal. I've seen YOU with a dibling or two on your way out of the office."