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).
真
=
具
+
十
:
Mnemonic symbol: a replicator. It generates real and genuine things out of nothing. Looks like a microwave with a cross as antenna. James II of England (zh) broke his replicator (真) in front of the encampment ((e)n1): the cross (十) on the top is broken. Using his toolbox (具), James II of England tries his best to fix it. Fortunately he has a genuine, authorized, real (真) replacement cross.