Christmas cracker

Christmas crackers were an integral part of Christmas parties. They were pulled by two people and there was a resultant bang. They commonly contained novelty gifts and hats.

The Tenth Doctor once pulled crackers with the Tyler family while dining with them at Christmas. (DW: The Christmas Invasion)

On Christmas Eve, the Eleventh Doctor pulled crackers with the Pettigrew family and Kazran Sardick, as part of their celebrations. He hid a playing card in one. (DW: A Christmas Carol)