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MacOS Accessibility Cursor
(i.stack.imgur.com)
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Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Thanks for pointing that out, I found the setting on my laptop and tried it out. I do like the jiggle approach better, though, simply because that is something many people (myself included) instinctively do when losing track of the mouse cursor.
I just added it because the current answer (jiggle) is a Gnome shell extension. So this is just my answer for Plasma.