Do you know what's missing from your expensive, cutting-edge smartphone? The ability to flip it around at high speeds like a nunchuck.
Kids find an excuse to turn anything into a swinging weapon, so why don't we do that as adults? That's the question none of you are asking, but you're getting an answer anyway.
I'd like to introduce the $30 Trick Cover, available for the iPhone 6 and iPhone 6 Plus. Basically it's a case with two sections connected by a sliding, rotating hinge so you can have it open, closed or use it as a stand.
However, that description doesn't do justice to the Trick Cover's real purpose, which is letting you reenact the childhood joy of swinging something around until you accidentally let go and it breaks a lamp. You really need to watch the demo video for the full effect.