Yes many have turned sites like ebay. com as places to make some extra and easy cash. You could sell the things around your house or you could buy things on the site or elsewhere from other people to sell for higher prices.
You can also compare prices by looking through the “sold” listings. There are a lot of persons who buy items en masse and sell them for profit. It is something you can try if you are great at shopping and selling stuffs.
I know I have not exhausted the options for earning some extra and easy money, so you can share some ideas you know.