When shooting in the great outdoors sun hitting your laptop or monitor can become a serious thing and actually keep you from actually seeing the screen. This is why Laptop visors (or monitor hoods) were invented. Think a black box with an opening on one side to allow screen viewing and keyboard access. They are usually not that expensive going from $20 for a basic kit, to $85 for a nice one, to as high as $250 for an Optimus Prime grade hood with a tripod mount and pouches.
Ikea call it the “DRÖNA Box” and it’s designed for storage BUT lay on its side it will hold a 15″ laptop beautifully.
It literally is ready to go without any adjustments and it only costs $5.99!
It totally looks the part and even folds flat so will fit nicely in your kit bag. I’ve been using it for a few weeks on location and I really don’t know how I did without one.