Google will put its stamp of approval on the best DIY VR kits

At Google's I/O 2014, the search giant announced Cardboard, a head-mounted display that runs on Android to power a fully-featured virtual reality experience that's made out of … you guessed it, cardboard. After almost a year of availability, several third-parties have riffed on the original model, manufacturing their own Cardboard "compatible" headsets made out of such materials as plastic, wood and metal. Google encouraged this sort of engagement with the tools out of the gate, but