This is a simple, yet practical "TechSnack"!  For approx $32.00, you can work on your laptop - even in bright sunlight!

From the ITHelper site:  Laptop computers are frequently used in outdoor environments where sunlight and glare make screen viewing very difficult due to screen wash-out. The Comp shade blocks most of these visual impediments and increases apparent screen contrast, thereby reducing eye-strain and helping to control "Computer Vision Syndrome" (CVS).

The Comp shade also helps to provide viewing privacy which is especially needed for laptops used in public places. This patented design can be folded closed while remaining attached to your laptop, so it is always with you when you need it.

How it works:

A left hand and right hand panel assembly, each consisting of an integral side panel plus top panel, are hinged to a mounting strip.  The mounting strip becomes attached to the outside of your laptop’s lid using factory-pre-positioned pressure-sensitive hook & loop strips.

The assemblies overlap near the top center to form a 3-sided tunnel around the screen, approximately 9 inches deep. The resulting tunnel blocks most light infiltrating around  the top and sides of your screen.

The panel assemblies can remain affixed to the outside of the laptop’s lid and swing nearly "flat" for storage.