不請自來

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.

请 = 讠 + 青 : The Queen of Hearts set up a fountain of youth right in the middle of the engine. She invites everyone to take a sip and even set up an advertising column to motivate the visitors to come and try it.

自 = 丶 + 目 : A hand mirror, which someone uses to look at her- or himself. The Eye of Providence is looking at itself in a handheld mirror in the space station's bathroom. It think it's indeed looking very good, since Zorro attached a petal leaf to its eyes.

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).