Tartan

Tartan was a type of pattern, famously linked to Scotland

The Sixth Doctor's coat featured patches of red tartan. (TV: The Twin Dilemma)

For a while, the Seventh Doctor wore a crimson and black tartan scarf. (TV: Time and the Rani)

Clara Oswald wore a tartan skirt with her black cardigan and her white blouse. (TV: The Time of the Doctor, Deep Breath)

Jeremiah O'Kane owned a tartan blanket. (HOMEVID: The Zero Imperative)