扂

占 = ⺊ + 口 : Mnemonic symbol: a yellow umbrella. James II of England occupies the anthill's bathroom (an4). He uses a pennant (⺊) stuck into a mandarin (口) to mark his territory, and stands there proudly with a yellow umbrella (占).

户 = 丶 + 尸 : Helga Horse (hu) is being attacked by a ghost (尸) with a big petal leaf (丶) on his head in the space station's bathroom (Ø4). She's fighting him off using a wooden swinging door (户).

戶 = ⺁ + 口 : Helga Horse's (hu) family (戶) is visiting her in the space station's bathroom (Ø4). For dinner, Helga prepared a ton of bananas (⺁) and a mandarin (口) on top.