永
=
丶
+
水
:
Yu the Great just got the most romantic proposal ever! In engine, somebody prepared a water fountain and had a diamond ring floating on a petal leaf float over to her. Unfortunately Yu the Great doesn't know who the ring is from, as her lover drowned in the water fountain earlier that day.
永
=
丶
+
水
:
Mnemonic symbol: as the advertisements tell us, diamonds are forever. I'll represent 永 with a diamond ring.
逝
=
折
+
辶
:
One day when Sherlock Holmes (sh) was using the space station's bathroom (Ø4) he was only wearing gladiator sandals (辶), accidentally dropped his folding knife (折) onto his foot and died (逝).