You're our 10,000th customer, so everything you buy today is free! The Cashier shouted excitedly. The boy was confused. He was only there to get 1 thing, but now he could have anything they had in the store. He was delighted that he could literally buy everything in the store.
"what should I get. Cookies, Coke , and Candy, or every Xbox game Known to man?"
Then he looked over and saw an old Women and a little girl. They where trying to buy fruits and vegetables, but they couldn't afford them
"Please I don't get payed for another week, please I'll will pay you back when I get my Paycheck." The old lady wept.
The boy then knew how he should use his new Found fortune.
Enjambment - the sentences do not finish with the end of the line.
Simile - "like a slackened drum"
Maybe even hyperbole, since it is an exaggeration.
I would go with the author points out that the eyes reveal the essential characteristics of a person.
