Have you ever found something old, valuable, and really cool? One day I was at my grandparents house and I went up into the attic and found an old trunk. So just out of curiostiy, I opened it and found hundreds of old sports cards that my grandpa collected when he was a kid. There was baseball, football, basketball, hockey, and many others. So I was just sitting there I realized that some of these cards could be worth thousands of dollars!