Ever wondered if you could have an extra monitor, while you're out and about with your laptop (or chromebook?) I'd wondered about it... and then I found this.
The case doubles as a stand. You'll need to look online to see how to fold it... I failed many times, and the ASUS documentation has a picture, but doesn't describe what you need to actually do.
Once you have it, it's a great way to double your productivity.
It does shorten how long your laptop battery will last, so it's best to use this while you're plugged in.
This isn't a bright monitor, so you should use it indoors... then again, you'll need a table for the stand anyway. And you'll find far more tables and power points indoors.