洗手不干

洗 = 先 + 氵 : It's shower day in the space station (Ø3)! Marie Curie (xi) and the FLOTUS (先) help wash (洗) each other using bottles of water (氵).

Mnemonic symbol: a baseball glove. Sherlock Holmes (sh) is trying out his new baseball glove (手) in the outhouse's living room (ou3).

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

干 = 一 + 十 : Guy Fawkes (g) is working (干) out in the anthill's bathroom (an4). He's lifting a flute (一) in one hand and a cross (十) in the other.

干 = 一 + 十 : Mnemonic symbol: dried fruit.

Guy Fawkes (g) is drying (干) his clothes in front of the anthill (an1). He hangs them on a large construction made from a cross (十) and a flute (一). Waiting for his clothes to dry, he snacks dried fruit (mnemonic symbol for 干).