I'm wondering whether there is a way to turn the mouse pointer into a laser pointer, preferrably a thick red dot with a fading trail, e.g. for a screen-sharing session with slides in LibreImpress or a PDF opened in some viewer. Ideally, this feature would be application-independent, a GNOME or X feature so to say. This LibreImpress-specific option is not quite what I'm looking for. Also GNOME Tweaks does AFAIK not allow me to do this. Thanks for hints to a potential solution.
If you have some installed cursor themes, you can move that folder to the
~/.local/share/icons
and then you should be able to change cursor in gnome tweak toolsudo apt install dconf-editor dconf-editor
navigate to org/gnome/desktop/interface/cursor-theme
try
redglass OR handhelds
Default : Yaru