Editor's Note: This story originally appeared on The Penny Hoarder. Do you have an old, unopened smartphone lying around? You might be sitting on a fortune. A first-generation iPhone recently sold for over $190,000 at auction. Most vintage technology isn’t that valuable. But it’s still worth opening up your junk drawer to fish out an old Zune (currently going for $129.99 on eBay), Sansa Clip ($89.