胛

jiǎ = ji + a3

shoulder blade

胛 character breakdown

胛
- 月
  - 二
    - 一
  - ⺆
    - 丿
    - ㇆
      - 一
      - 亅
- 甲
  - 丨
  - 曰
    - 一
    - 囗

yuè = yu + e4

moon / month / monthly / CL:個|个[ge4],輪|轮[lun2]

月 = ⺆ + 二 : Yu the Great (yu) is modelling a moon (月) in the elevator's bathroom (e4). He uses a stapler (⺆) to staple a lot of capacitors (二) together to form a moon shape, while the real moon is sitting for him.

甲

jiǎ = ji + a3

first of the ten Heavenly Stems 十天干[shi2 tian1 gan1] / (used for an unspecified person or thing) / first (in a list, as a party to a contract etc) / letter "A" or roman "I" in list "A, B, C", or "I, II, III" etc / armor plating / shell or carapace / (of the fingers or toes) nail / bladed leather or metal armor (old) / ranking system used in the Imperial examinations (old) / civil administration unit in the baojia 保甲[bao3 jia3] system (old) / ancient Chinese compass point: 75°

甲 = 丨 + 曰 : Mnemonic symbol: 甲 just looks like a protest placard.

It's the first (甲) time Joan of Arc (ji) is protesting against something using a protest placard (甲). Inside of the ashram (a3), she is protesting against the many dinosaur bones (丨) lying around. She does not only have a protest placard, she also uses a microphone (曰) to deliver raging speeches.