大 = 一 + 人 : The big (大), huge (大) robot (mnemonic symbol for 大) is working out in the ashram's bathroom (a4). He's lifting a flute (一) to which Don Quixote (d) and Neanderthal man (人) are clinging.

王 = 一 + 土 : Mnemonic symbol: Martin Luther King. Willy Walrus (wu) is stuck in a heap of dirt (土) in the anglepod's kitchen (ang2). Martin Luther King (王) helps him by holding out a flute (一).

要 = 女 + 覀 : Bessie Coleman shows Maud Younger how to use a knuckle duster in the aorta's bathroom. She says it's very important and that Maud will have to get one herself.

件 = 亻 + 牛 : Joan of Arc and Rosa Luxemburg want to use the anthill's bathroom, but there is a bull blocking the way. He posed them a riddle, and as long as they can't deliver the item or component he asked for to fulfill this quest, he won't let them pass.

凑 = 冫 + 奏 : The King of Chu (c) finds an abandoned popsicle (冫) in the outhouse's bathroom (ou4). He exploits this opportunity (凑) to play music (奏) by melting holes into the popsicle using a warm stream of water and thus creating a flute to play.

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

合 = 亼 + 口 : Mnemonic symbol: a tube of glue.

In the elevator's kitchen (e2), Hamlet (h) is preparing holiday decorations. He wants to be lazy and cover Halloween as well as Christmas at the same time, so he carved out a mandarin (口) and glued a pointed cap (亼) to its top using a tube of glue (合).

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.

的 = 勺 + 白 : Don Quixote (d) ends up on the elevator's roof (e5) after a standoff. His only weapon left is a silver spoon (勺), so he can only wave with a white flag (白).

兵 = 丘 + 八 : Brunhilde and the soldier visit a burial mound in front of the engine. It is round like a ball like the deceased inside. To commemorate the round fallen soldier they put up a big eight-ball.

器 = 㗊 + 犬 : The Saint Bernard dog has been practising playing his bagpipe all day in the space station's bathroom. The Queen of Hearts is so annoyed that finally she grabbed a screwdriver as utensil to end this torture.

吗 = 口 + 马 : On the ashram, Mahatma Gandhi asks the unicorn if he can eat its mandarin.

倒 = 亻 + 到 : Rosa Luxemburg (亻) arrived (到) in the aorta (ao3) and is greeted by Don Quixote (d), who, clumsily, topples and falls on to the ground (倒) right before Rosa when he actually wants to hug her.

也 = ㇆ + 丨 + 乚 : Mnemonic symbol: an excavator. A plow and a shovel are both tools for moving earth, and an excavator can be used to dig up dinosaur bones.

Maud Younger (y) is digging for dinosaur bones (丨) in the elevator's living room (e3). First she used a plow (㇆) to destroy the floor, then she used an excavator (也) to pull out the dinosaur bone surrounded by lots of earth. Finally she uses a shovel (乚) to remove the remaining earth manually so as to not damage the precious dinosaur bone. (The stroke order is ㇆丨乚)

也 = 乜 + 丨 : Maud Younger (y) wants to split a dinosaur bone (丨) in half in the elevator's living room (e3) using the shovel of an excavator (也). She has to squint (乜) her eyes to precisely hit the center point of the dinosaur bone.

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.

难 = 又 + 隹 : Mnemonic symbol: a video game which is almost impossible to beat.

难 = 又 + 隹 : Just inside the anthill's kitchen, Napoleon and a sparrow are trying to beat an insanely difficult video game. After playing and failing all day long Napoleon finally loses his temper and crashes the game wearing two boxing gloves.