Cufflink
From Tardis Wiki, the free Doctor Who reference
Cufflinks were a form of jewellery worn on the shirt cuffs.
The Sixth Doctor wore cat cufflinks on at least one occasion. (AUDIO: Trouble in Paradise)
Victor Klum, an Abzorbalovian, wore a pair of cufflinks whilst disguised as a human. (PROSE: The Visual Dictionary [+]Loading...["The Visual Dictionary (reference book)"], TV: Love & Monsters [+]Loading...["Love & Monsters (TV story)"])
Joe Buchanan wore dice cuff links, displaying his gambling tendency. (TV: The God Complex)