@fuzzychef @jessica if it helps anyone, Windows has a handy mouse locator thingy you can enable in the mouse options (tap the Control key to trigger). I'm sure other OSes have similar options.
(Of course i always forget to use it)

https://support.microsoft.com/en-us/windows/find-your-mouse-pointer-fast-dbc1d222-778c-da15-5218-cb8336074554

edit: If you have PowerToys installed (highly recommended!), there is a fancier and prettier version in Mouse utilities (on mouse shake or double Ctrl tap).
But the basic single tap option is built into Windows, you just need to enable it.

Find your mouse pointer fast - Microsoft Support

How to find your mouse pointer fast by using the CTRL key.

@hotkey @fuzzychef @jessica Awesome - I didn't know about that one. On macOS, if you shake the mouse, it'll temporarily make the cursor bigger.

https://support.apple.com/guide/mac-help/make-the-pointer-easier-to-see-mchlp2920/mac

Make the pointer easier to see on Mac

On your Mac, change the size and color of the pointer so it’s easier to locate on the screen.

Apple Support