When OnePlus launched their 2, I did a rundown of some of your options for Cardboard. I loved the idea of how they used it for the launch. Even still, having that list of options, I still haven't pulled the trigger on a set.
And then I saw this DSCVR set. A little pricey at $20US... but it looks so darn cute!
I also love the flaps to hold the phone, looks nice for when you're moving your phone about exploring.
The only downside here is waiting until December for it to ship.
But it's so cute!