Check out this new Kickstarter campaign for a product called Centr Cam.  It’s a 360 degree camera that is small enough to fit in your hand.  This is technology that isn’t new, people actually have designed set-ups for their GoPro Cams but this is one of the first complete consumer designs.  The camera is splash proof and you can switch to single camera mode or 360 mode, so you’re not locked into shooting 360 degrees all the time.  Check out their Kickstarter page if you’re interested in supporting.