Fifty years of Doctor Who - The Man in the Box - by Jill Lepore

...a stagehand wearing a black hooded sweatshirt and black cargo pants rummages through a Tupperware storage box, making an awful clatter. He pulls out something metal and rusted, cradling in his tattooed hands the part that would roll away if you were to guillotine a robot. “This, this,” he mutters in quiet triumph, “is the head we need.”