備用

备 = 夂 + 田 : Beelzebub prepared a field of high heels in the Eiffel Tower's bathroom. He wants to shock any person entering the bathroom with society's expectations towards what people should wear on their feet.

用 = 丨 + 月 : Mnemonic symbol: a first aid kit. Can you see the cross on the container?

用 = 丨 + 月 : Yu the Great hurt her leg when she slipped in the engine's bathroom. The moon helps her to splint her leg using the bathroom's first aid kit and a dinosaur bone.