I ran across something on Amazon today that I did not know existed. It is called the
Mouse Jiggler. It is a small USB stub that you connect to your system and it shows up as a mouse. It will send signals to the system at regular intervals to make it seem to the system that somebody is moving or jiggling the mouse.
You might ask - Why would anybody want something that does that?
The answer is further down the page in the Q and A:
"Will this keep my Outlook Lynx indicator "Green"?"
"Yes it will." Translation - Oh yes, sweet Jesus, it will keep it green all day long.