Among Griffin's new cases for the iPad mini is its unimaginatively named Folio ($45). Covered in real leather and lined with microsuede, the case comes in a handful of patterns and colors. It leaves the tablet's corners exposed, and lacks any sort of button or port protection. On the right edge you'll find a stylus loop that can be used with a self-provided touch pen. Like most folios, the cover can fold around to the back to form a viewing or typing…