The thing about the iPhone 6 Plus is that you don't need it, but you might want it. As far as I'm concerned, it's a tablet, and to me tablets are optional computers for when you want more screen than you can easily fit in your pocket.
The Polaroid Cube is a delightful little camera that takes still-shots and video. Some gadgets feel like they need to be handled with care until you settle into a comfort zone and they become part of your life. The Cube isn't one of those.