鼅

知 = 口 + 矢 : Mnemonic symbol: Francis Bacon is attributed to have stated "scientia potentia est", "knowledge is power". I'll thus represent 知 by Francis Bacon. Francis Bacon (知) and James II of England (zh) are playing darts (矢) in front of the space station (Ø1). Because they lack a dart board they just use a mandarin (口).

黾 = 口 + 电 : Marilyn Monroe (mi) wants to charge (电) her phone in the encampment ((e)n3), but she finds that the charger (电) is already occupied by a toad (黾) which charges its mandarin (口). (Can you see the mandarin connected to the charger in the character 黾?)