Japanese designer Moku Woodware calls this there Desktop Chair. Here is the official description from the project developer: While we enjoy the mobility of laptop, some of us still use desktops to work efficiently and comfortably. Hand made with fine natural basswood, Desktop Chair simply holds your MacBook Air or Pro and turns it into a desktop machine with an external display, a keyboard and a mouse (or trackpad). Desktop Chair fits virtually all Apple laptops with a height of 1.2″ (30mm) or less, regardless of the shape, with or without a cover, now and the future. Comes with a cushion pad and anti-slip button.

Founded on Campfire, Japan's version of Kickstarter