泳
=
氵
+
永
:
Yu the Great (yu) is swimming (泳) through a sea of diamond rings (永) inside of the engine ((e)ng3). It is very exhausting, so she often has to take sips from her water bottle (氵).
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).