汗牛充栋

汗 = 干 + 氵 : Hamlet is sweating a lot in the anthill's bathroom. He ate hot and spicy dried chilies and even a bottle of water can't help to quench his thirst.

牛 = 𠂉 + 十 : A bull has been locked to a big cross in the outhouse's kitchen, and Nefertiti has the key. She promises to free the bull if he pledges allegiance to her leadership.

充 = 亠 + 允 : Mnemonic symbol: a charger for your mobile phone. Chantal Chicken (chu) has to charge her mobile phone, but the only charger (充) is outside in front of the engine ((e)ng1). Without any better option she waits outside in the cold wind for her phone to charge until she gets a runny nose (允). Lacking tissues she has to blow her nose into her beret (亠).

栋 = 东 + 木 : Doggy Dog sets up his tent in the engine's bathroom. He already set up a Christmas tree and an Oriental Pearl Tower model as tent poles, and he is busy fixing the ridgepole atop of them.