榆木腦袋

木 = 八 + 十 : Mnemonic symbol: a Christmas tree.

Malte Monkey (mu) is setting up a Christmas tree (木) in the bathroom of the space station (Ø4). He decorates the tree with eight-balls (八) and puts a holy cross (十) at the top of the tree.

脑 = 亠 + 凶 + 月 : Napoleon and the moon lost their minds in the aorta and put their brains in the middle of the room. Now they're dancing around their brains in a weird ceremony. The moon put on a vicious demon mask and Napoleon is wearing a way too large beret while they dance around their brains.

袋 = 代 + 衣 : Don Quixote (d) put his kilt (衣) in the washing mashine in the airplane's bathroom (ai4), and now he needs a token (代) to open it. Unfortunately as he is looking through the washing machine's window he remembers that he left the token in his kilt's pocket (袋).