Working outdoors on a sunny day with a laptop can be a challenge, especially if there are no nearby trees to provide shade. The Compushade Laptop Visor is a foldaway visor to protect the laptop from glare.

When not in use, it folds down conveniently and can be stored on the back of the laptop. When required, quick setup will provide the anti-glare support required. From the looks of it, it appears that this shade would also provide some privacy for your work, preventing people from peering in from the side, although if the objective is to obtain privacy, your needs may be better met with a privacy screen.

[Laptop Visor via Red Ferret]