I got pranked with this website: https://updatefaker.com/
I recently switched from manual labor to office labour and learned the hard way to lock my screen :)
In hindsight it was hilarious, but I waited for maybe 20 minutes before I got suspicious. How can I take revenge?
Ctrl + Alt + up arrow key sets the monitor output to be upside down.
I also am a fan of making the cursor huge and turning on pointer trails.
These are good pranks with the right level of irritating. They make it hard to work but not impossible to do the work