So August,

I can officially recommend the Microsoft Wireless Display Adapter.  Not only
did it work right out of the box with 3 simple steps, it added it as a THIRD
extended dispaly.  The picture quality is 1080P, which I'm unclear how that
translates to monitor display pixels; however I ran videos from netflix on it
and it was flawless. It works with HDTV's and or computer displays, as well
as works with phones and other type of devices with some limitations.  It
even uses wireless without requiring internet, so it's not using bandwidth. 
Directly from the Laptop to the display, period.  There are two things that
are required:

1.  You'd have to search how to do this as I forget how.  However, a command
prompt can tell you if your laptop supports the wireless display function.
2.  I can only say it works great on Windows 7+.  I can't say it works well
with other OS's.

Total cost $49.  I'm extremely happy!

Can be purchased on Amazon for less then on Microsofts web site.  There is a
version 1 for less, but I'd recommend the v2.  It's only $5 more.  And, there
are refurb options for $10 less.  It was painless, and works fantastic. 
Might be good for your shop!

-Doug

--- Mystic BBS v1.12 A45 2020/02/18 (Windows/32)