 While designing the Creighton @-@ Ward Mansion sets , Bell and his staff strove for authenticity , ordering miniature Tudor paintings , 1 ⁄ 3 @-@ scale <unk> and Regency @-@ style furniture and <unk> in the shape of a polar bear skin . This realism was enhanced by adding scrap items acquired from household waste and electronics shops . For example , a vacuum cleaner pipe serves as Virgil Tracy 's launch <unk> . 
