Old Coins
You probably know someone who collects coins and might have even made fun of them. However, they might have been right! You can earn money from rare coins. Jeff Bidelman is a former dealer and discovered a stash over 200 years old that got him $200,000!
Weathervanes
Weathervanes used to be common atop homes and barns in open spaces. You looked to them to see which way the wind blew. Apps now replace that, so antique weathervanes are valuable, going for about $7,000 if they were made in the 19th century.