囱

囱 = 丶 + 囗 + 夕 : Kitty Cat (cu) cleans out a chimney (囱) in front of the engine ((e)ng1) using a petal leaf (丶). She knows there's a bat (夕) inside, so she keeps a wooden box (囗) ready to catch it.

This character shall be represented by a petal (丶) when appearing in other characters.

Julian Giant Squid (zhu) is napping in the space station's living room (Ø3) and hugging a petal (丶).

Mnemonic symbol: a plastic enclosure. Willy Walrus (w) is keeping frozen fish in an enclosure (囗) in the Eiffel Tower's kitchen (ei2).

Mnemonic symbol: this character looks a bit like a bat, and bats come out of their caves at dusk. I could see the upper left 丿 as part of the bat's right wing, ㇇ as the body/head and 丶 as the eye of the bat.

Xi Shi (xi) goes out for a space walk in front of the space station (Ø1) in the evening (夕), where she observes a space bat.