囗

日 = 囗 + 一 : Robinson Crusoe (r) is hiding from the sun (日) in an enclosure (囗) full of flutes (一) in the space station's bathroom (Ø4).

国 = 囗 + 玉 : Mnemonic symbol: a nation's flag. Let's say the Chinese flag.

In the observatory's kitchen (o2) Gitta Giraffe (gu) is practising her ballet performance. She got a whole crate (囗) full of jade bracelets (玉) and flags (国) and fixed one flag to each jade bracelet. This makes a perfect combination for throwing the ring with the flag waving behind it and catching the ring again after a few pirouettes.

西 = 兀 + 囗 : Marie Curie has gone crazy from the loneliness in space. In front of the space station, she sits inside of a large wooden box, wearing a cowboy hat and playing a 胡兀尔 fiddle, thinking that she's participating in a square dance in the wild west.

西 = 兀 + 囗 : The wild west is largely recognized by the symbol of the cowboy hat.

目 = 囗 + 二 : Mnemonic symbol: the Eye of Providence (目). Malte Monkey (mu-) is unpacking a wooden box (囗) full of capacitors (二). He's afraid that the Eye of Providence (目) will see him, so he does it secretly in the space station's bathroom (-Ø4).

冋 = 冂 + 口 : Zeus is working at a border control checkpoint in front of the engine, but there is no-one to be checked. He is so bored that he's driving staples into mandarins without end.

冋 = 冂 + 口 : A border control checkpoint.

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.

囬 = 井 + 囗 : Let's say this one looks like a closet.

田 = 囗 + 十 : Mother Teresa (ti) wants to plant a field of crosses (田) just inside the anthill's kitchen (an2). She ordered a wooden box (囗) with crosses (十) inside and puts them up one by one.