Bidding box for home-played games. Use of bidding boxes has several advantages over oral bidding: it reduces noise in the room, prevents bidding being overheard at neighboring tables, allows easier review of the auction, and reduces the opportunity to pass unauthorized information to one's partner (intentionally or not) by the manner and intonation in which one makes one's bid. A bidding box is typically a plastic box with two slots, each containing a set of bidding cards. One slot contains 35 cards with symbols of bids (5 denominations—clubs (), diamonds (), hearts (), spades (), and notrump (NT)—in seven levels of bidding,
Bidding box and lay them down partially overlapping the packet of three cards of the 1 bid. With standard, "right-handed" boxes (see laterality below), the calls are placed left to right on the table as seen by the bidder. When the auction is over, each player first returns to his bidding box any Pass, Double, and Redouble cards used. After that, all the bid cards from the table are simply swept up into a single stack and placed into the bidding box at the back; in this way, the box is returned to its original state and is ready for the following