Skarosian chair

A chair was a unique object on the planet Skaro.

According to Davros, it wasn't "easy to procure", being the only other chair on the planet beside his wheelchair, as no one on Skaro needed a chair. He also said that the Twelfth Doctor should feel privileged by using it. (TV: The Witch's Familiar)

Behind the scenes

 * In The Curse of Fatal Death, chairs are used to accomodate the captive Ninth Doctor and his companion Emma aboard a Dalek spaceship. When Emma asks the Daleks why they have chairs aboard their spaceship, one replies "we will explain later", a running gag in the sketch. Incidentally, both The Curse of Fatal Death and The Witch's Familiar were written by Steven Moffat.