Via Bright And Bold dot com you can buy a Sudoku Puzzle Pendant necklace featuring a replica miniature puzzle with a few handwritten numbers filled in to give you a head start.
The Sudoku is mounted in a rectangular silver-tone frame, sealed with clear resin, and strung on a black rubber cord with sterling silver lobster claw clasp.
Also dangling from the cord is a fabulously-detailed pewter pencil charm, poised for solving. The Sudoku Necklace measures 1-3/8″ by 1-1/4″ with an 18″ cord length and will cost you US$ 29.95. Happy Puzzling!