亻
=
丿
+
丨
:
Mnemonic symbol: Rosa Luxemburg. She's quite radical, and her name starts with "r", just like "ren2". Also, 亻appears at the left-hand side of characters, and Rosa is a leftist as well.
Robinson Crusoe (r) and Rosa Luxemburg (亻) are having their favorite snacks in the encampment's kitchen: Rosa is eating a banana (丿) and Robinson is eating a dinosaur bone (丨).
赞
=
兟
+
贝
:
The two FLOTUS (兟) visit Zorro (z) in the anthill's bathroom (an4) and as they see that he lost his rapier and has to fight with a crab (贝) as a weapon instead, they decide instantaneously to become his patrons (赞) and to pay him $1 for each defeated villain.