Dodocase's SmartVR is a pocket-sized Cardboard alternative
 

When Google first introduced its Cardboard VR concept on June 25th 2014, there were only a few ways you could try it out yourself. You could either get one for free if you were an I/O attendee, or you could make it yourself based on Google's open sou...

http://www.engadget.com/2016/03/07/dodocase-smartvr/