名
=
口
+
夕
:
Mnemonic symbol: a name badge (from 名牌).
Marilyn Monroe (mi) prepared a mandarin (口) for her bat (夕) in the engine's kitchen ((e)ng2) and put her little darling's name badge (名) in front of it.
源
=
原
+
氵
:
The origin (源) of the H bomb can be traced back to when Yu the Great (yu) once forgot a lot of water bottles (氵) next to her A bomb (原) in the anthill's kitchen (an2) and accidentally detonated the bomb.