Card was a material similar to paper. Card could be used for origami, and was favoured by the Origami Empire of Draxos Eleven and Twelve. (PROSE: Sick Building)
When confronting the Toymaker in Soho 1925, the Fourteenth Doctor challenged his foe to a game of cards. The Toymaker won the game, but the Doctor was able to raise the stakes to "best of three", citing that he had won a game back in his first incarnation. (TV: The Giggle [+]Russell T Davies, Doctor Who 2023 specials (BBC One and Disney+, 2023).)