2. Baseball Cards
Your old baseball collection can be a home run for your bank account, especially if you have any cards that date back to the 1950s. The 1956 Mickey Mantle card is currently being sold for $75 on eBay, while a Hank Aaron card from the 1970s may be worth between $20 and $25. 

But who knows? You might be sitting on a hotly sought-after one, like the 1954 Ted Williams card which sold for $50,000 in auction!