贝
=
⺆
+
人
:
Mnemonic symbol: a crab. In the Eiffel Tower's bathroom (ei4), the Neanderthal man (人) and Beelzebub (b) are fighting a crab with staplers (⺆), but because the Neanderthal man (人) can't handle the stapler he accidentally staples himself in the forehead.
shell / carapace / crust (earth's crust etc) / also pr. [ke2]
壳
=
冗
+
士
:
The Queen of Hearts (qi) is dating the bachelor (士) in the aorta's bathroom (ao4). The bachelor tries to impress the Queen of Hearts and inhaled a lot of helium (冗), but instead of sounding funny he is just squealing so much that the Queen of Hearts hides under her carapace (壳).
儿
=
丿
+
乚
:
Mnemonic symbol: "son" (儿) sounds similar to "Sun" like in "Sun Wu Kong", so it's gonna be represented by the monkey king. Albert Einstein (Ø-) and Sun Wu Kong (儿) are fighting in the space station's kitchen (-Ø2). Their weapons: Albert Einstein has a shovel (乚), and Sun Wu Kong has a banana (丿).