垫料

垫 = 土 + 执 : Dorothy Gale (di) built an air cushion (垫) vehicle out of dirt (土) in the anthill's bathroom (an4) and happily rides it in circles, until a police officer appears and asks for her license (执).

料 = 斗 + 米 : Li Qingzhao sees the matador fighting a sack of rice in the aorta's bathroom. At least she thinks she is fighting the sack of rice as he is repeatedly stabbing it. Truth is that he is working as inspector and taking samples of the rice to inspect the material.