If you have unused items, you can try selling them on sites like eBay, Amazon, or Craigslist. If you’re crafty, you might want to consider selling your homemade items on Etsy or a similar platform,
If you’re willing to put some effort into procuring items for sale, you may be able to make quite a bit of money buying and selling. The secret is to look for bargains at places like flea markets, garage sales, and second-hand stores, and then sell the items for more online. This works well for items like books, which are relatively easy to store and ship.
If selling online isn’t for you, hold a garage sale or look into selling at flea markets and craft fairs in your area.