Smartphones are now in 80 percent of U.S. homes, according to the Consumer Technology Association (CTA), making them second most frequently owned tech product in U.S. households, behind TVs.

Maybe you're replacing an outdated model, or maybe you're upgrading to Blu-Ray, but if you find yourself with an unwanted DVD player that's just gathering dust or sitting half-forgotten in the deep ...

In fact, some have even clung on to retro items dating back to the 90s, including Walkmans and Game Boys. But while 28 percent want to keep hold of gadgets so their kids can use them one day, a ...