STM's latest iPad mini case, Studio ($40), is a pretty cool spin on the traditional shell and lid folio-style design. The tablet snaps into a hard plastic back, which leaves the buttons and ports exposed, and there's a permanently attached lid available in purple or black. Not only does the lid automatically turn the iPad on and off, but it extends past the right edge of the display, magnetically attaching to the back. This ensures it doesn't come…
