Twelve South BookArc Flex

BookArc Flex is a stunningly beautiful vertical MacBook stand. BookArc Flex maximizes desk space by holding your MacBook vertically while connected to a monitor, so you can add a keyboard and mouse to turn your MacBook into a desktop. Place your MacBook inside and your laptop’s own weight draws the stand’s supporting arcs together. BookArc Flex cradles the Mac you have now and in the future by automatically adjusting to any size MacBook up to 1-inch thick without additional inserts. 
Create a comfortable, powerful desktop setup. 

Run your MacBook or laptop closed, while attached to an external monitor, keyboard and mouse for a true desktop setup
Beautiful all-metal arc design gently holds most laptops without additional adjustments (laptops with screens up to 16″ and less than 1-inch thick)
Save desktop space and makes room for large external displays, even on the smallest desks