來回來去地

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).

回 = 口 + 囗 : Helga Horse (hu-) smuggled herself into the Eiffel Tower's kitchen (-ei2). She covered herself in an enclosure (囗) full of mandarins (口). Unfortunately, she missed one little detail: The box full of mandarins is to be shipped back (回) to China soon.

去 = 厶 + 土 : Mnemonic symbol: The "nose" part (厶) can be seen as an arm, which goes through "earth" (土), and this reminds me of some protesters who lock themselves (or their arms, to be specific) to concrete barrels. Cupids dirt capsule could also be a concrete barrel. So in other characters, I'm going to represent 去 by a concrete barrel.

Cupid (qu) is trying to send himself to earth. In the bathroom of the space station (Ø4), he has prepared a capsule made of dirt (土). He's wearing his lucky fake nose (厶) when entering the capsule.

地 = 也 + 土 : Dorothy Gale (di) hates the cleanliness of the space station, so she used an excavator (也) in the space station's bathroom (Ø4) to dig a pile of dirt (土) out of the ground (地) for a mud bath.