GoPano Micro 360 lens for iPhone 4/s
Personal Movie Theater.
Wireless headphones, connects to your ipod
Tops to turn mason jars into useful kitchen items. Set. $25
DIY cell phone charger from Make.
iPhone lenses: fisheye, macro, wide angle.
Meet Pebble. Customize Your Perfect Watch. It's as Easy as Downloading an App. (I've already backed this project)