Here are a few to get you started and then you can look at the rest of Part 1 to find some more.
With this brass nozzle in his fists, with this great python spitting its venomous keronsene upon the world...
This simile compares the hose to a great python.
He strode in a swarm of fireflies.
This is another simile that compares the remnants of burnt books that are flying around to a swarm of fireflies.
Her face, turned to him now, was fragile milk crustal with a soft and constant light in it.
Another metaphor used to describe Guy's first impressions of Clarisse.
As for imagery, any scene that is trying to evoke the 5 senses (and there are lots of them) can be used as an example. Hope this helps and good luck in finding some more examples.