Turn your smart phone into a VR headset with a bit of cardboard. Google Cardboard – Google
A friend had sprung for the $16 bucks for the headset and a few apps for her phone. I didn’t have time to view too much of the available video. Some of it was great (over NYC in a helicopter). Some was not so great.
The camera rig uses 16 cameras (Go Pro it seems) that take 3d video in all directions.