What is a simile from the book looking for Alaska?

One example of a simile from the book "Looking for Alaska" is:

"And then, without thinking more about Alaska other than her soft, wet breath on my cheek, I was falling asleep like Miles bouncing off a trampoline, my thoughts bouncing every which way."

Here, the simile compares the character's thoughts bouncing around to Miles bouncing off a trampoline, creating a vivid image of the character's mental state.