Adjective phrases as attributive modifiers: "the sheer attraction to their material value" uses the adjective phrase "sheer attraction" as an attributive modifier to emphasize the allure of material value, adding descriptive and emotional nuances to the sentence.
Conditional clauses: "If you find something like a fancy smartphone or a designer wallet" serves as a conditional clause, setting up the scenario of discovering valuable items, increasing the hypothetical and situational nature of the sentence.
Rhetorical question: "It's almost like a temptation, isn't it?" uses a rhetorical question to emphasize the feeling of temptation, adding interactivity and contemplative quality to the sentence.