The OnePlus iPhone case comes with a OnePlus X invite
 

OnePlus has launched the "Sandstone" case for Apple's iPhone 6 and 6s, and guess what's inside? An invitation to purchase the OnePlus X. You have to admire the sheer chutzpah of that, though it's hard to imagine many folks turfing their $649-plus iPh...

http://www.engadget.com/2015/12/01/o...-one-x-invite/