Question: In Western Europe, we currently have a long spell of warm and dry weather. The perfect moment to combine sunbathing with working from home. However, outside in the sun, the legibility of my laptop screen is greatly reduced when compared to inside the house/office, even when I maximize the display's brightness. Are there any tricks I can use to increase the legibility (and ultimately my productivity)?  

I'll share one trick I often use, but I'm definitely interested in more suggestions.

Answer: 
I forgot where I saw/heard this tip, but I'm often using a [cardboard](https://en.wikipedia.org/wiki/Cardboard) box slightly larger than the laptop to provide shade on the display. At least for me, this makes it more legible. An additional benefit is that this also reduces the amount of sunlight on the laptop, which keeps it cooler and avoids the processor being underclocked, which would decrease performance. A slight disadvantage is that it also partially blocks the sun's rays to my upper body and arms.

Here is how it looks like:

[![enter image description here](https://i.stack.imgur.com/LtVDtm.jpg)](https://i.stack.imgur.com/LtVDt.jpg)
In my experience many command line users have bright font on dark background terminal emulators (usually white on black, or matrix-movie green on black), while in bright environments (e.g. outside work), a dark font on a bright background is more legible (black on white).

Of cause this mainly addresses command line users, afaik, office applications are already dark on bright.