来者不善，善者不来

來 = 从 + 木 : Mnemonic symbol: mailwoman. Sir Lancelot (l) is visiting the mailwoman (來) in the airplane's kitchen (ai2). As a gift, he brought a Christmas tree (木) decorated with rubber chicken (从).

来 = 丷 + 未 : Mnemonic symbol: mailwoman. Lancelot (l) is super happy that his inflatable crocodile (丷) and live size Ai Weiwei (未) puppet finally arrived (来). The mailwoman (来) delivered them straight to the kitchen of the airplane (ai2).

者 = ⺹ + 日 : Mnemonic symbol: the sun (日) is wearing a crown (⺹). This reminds me of Louis XIV, le Roi Soleil, the Sun King, which will thus be the mnemonic symbol for 者. The crown (⺹) wearing sun (日), the Sun King (者) and James II of England (zh) are taking part in a writing contest in the elevator's living room (e3) to see who of them is the best author (作者).

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

善 = 业 + 口 + 羊 : Mnemonic symbol: a good book about etiquette.

Sherlock Holmes (sh) finds a bullfrog (业) and a sheep (羊) fighting viciously over a mandarin (口) in the anthill's bathroom (an4). He finds this behaviour unbearable and starts to read Emily Post to them to teach them some manners (善).