One of the great things about Nokia phones from way back when making it your own with swappable plastic. While that feature isn't available on most handsets these days -- instead we've got bumpers and cases -- Nokia added a removable shell to its Lumia 820 Windows Phone. You can buy a new shell if you want, but if you've got access to a 3D printer, Nokia has just released a "3D-printing Development Kit" with all the documentation you'll need to create a backing of your own. It's available for download
