chad box

chad box n.  A metal box about the size of a lunchbox (or in
   some models a large wastebasket), for collecting the {chad}
   (sense 2) that accumulated in {Iron Age} card punches.  You had
   to open the covers of the card punch periodically and empty the
   chad box.  The {bit bucket} was notionally the equivalent device
   in the CPU enclosure, which was typically across the room in
   another great gray-and-blue box.