Paul sez, "The gentlemen of the H.P. Lovecraft Historical Society (who did the Call of Cthulhu film a few years ago) have produced a little something for the Holiday season: Lovecraftian Playing Cards.
It's a 52 card deck (plus 2 jokers) of standard playing cards, but the face cards depict Cthulhu, Shub Niggurath and Nyarlathotep; the ace of spades has an Elder Sign and Lovecraft himself is the joker.
All of them backed with a a suitable sigil of protection so you don't accidentally summon up something you can't put down.
(Thanks, Paul!)