If you have a gaming console your kids no longer use, an old cellphone or tablet stashed in a drawer or a computer you don’t need, you can turn these items into cash. Sell unwanted electronics on sites such as Gazelle. com and uSell. com, both of which offer free shipping. You can also take old phones, tablets and MP3 players to one of the more than 2,200 ecoATM kiosks across the U. S. and get cash on the spot.