足不出户

足 = 龰 + 口 : Mnemonic symbol: a football. Zapatista Zebra (zu) wants to pimp his football (足) in the space station's kitchen (Ø2). He thinks that a few more vitamins wouldn't hurt, so he extracts the vitamins from a mandarin (口) with a syringe (龰) to inject them into his football.

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.

出 = 屮 + 凵 : Mnemonic symbol: 出 tilted 90 degrees looks like "EE". "EE" is an abbreviation for "emergency exit". In front of the space station (Ø1) Chantal Chicken (chu) plugged her thornbush (屮) into a receptacle (凵), but it short circuited and immediately caught fire. Chantal has no option but to use the emergency exit (出) she came out of to go back into the space station.

户 = 丶 + 尸 : Helga Horse (hu) is being attacked by a ghost (尸) with a big petal leaf (丶) on his head in the space station's bathroom (Ø4). She's fighting him off using a wooden swinging door (户).

戶 = ⺁ + 口 : Helga Horse's (hu) family (戶) is visiting her in the space station's bathroom (Ø4). For dinner, Helga prepared a ton of bananas (⺁) and a mandarin (口) on top.