Earring collection

After last class, I tried to think of an object that I could collect that, as a college student, wouldn't waste my time or money, and I could use again. When I went home for the weekend and went to the only store I buy clothing at (Goodwill), I got it: Earrings. So I collected 10 different pairs of earrings all from Goodwill. Their function and place of discovery is what they all have in common.