How should sentence 2 be changed? they move agile through the truck's tight interior, and their move continually like lobster claws.

Change but to and

Move the comma after hands

Change continually to continue

The sentence should not be changed.

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pretty sure 1.someone's coat was found in the lobby.  

(you didn't attach a copy of the poem, but i'm answering as best as i can)

since a simile compares two unlike things using like or as, it kind of gives an item the ability to do something it can't.

example: "the player was like a tiger on the field"

in this sentence, the simile conveys the idea that the player was fast and strong, like a tiger.

they are all talking about chocolate (next time you post a question with "which" post the choices too)