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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.