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).

目 = 囗 + 二 : Mnemonic symbol: the Eye of Providence (目).

Malte Monkey (mu-) is unpacking an enclosure (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).

曰 = 囗 + 一 : Mnemonic symbol: a microphone.

Yu the Great (yu) is selling flutes (一) in front of the elevator (e1). He has a whole box (囗) of them, and he's advertising them by using a microphone (曰).

团 = 囗 + 才 : Tommy Turtle (tu) inspects the super secret box (囗) in the anthill's kitchen (an2). He's not supposed to open it, but with his super X-ray vision ability (才), he can see that it is filled with balls (团) and dumplings (团).

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.

田 = 囗 + 十 : Mother Teresa (ti) wants to plant a field (田) of crosses (十) in the anthill's kitchen (an2). She ordered an enclosure (囗) full of crosses (十) and puts them up one by one.

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.

固 = 古 + 囗 : Gitta Giraffe is building a hard and solid stronghold inside the bathroom's space station. The stronghold consists of a cloister inside a wooden box.