If you work with GPS data files like
You may know the pain of converting one in another.
In my specific workflow I needed to convert KMZ files exported from Google my maps to GPX files viewable on my Garmin GPS and OsmAnd app on my phone.
So I created these macOS Shortcuts
KMZ to KML
Selecting one or more KMZ files this shortcut extract the archive, move and rename the inner KMLs
KMZ to GPX
As the above but then converts the KMLs in GPX files using GPSBabel as command line tool.
With the same approach is possible to create virtually all combinations of conversions supported by GPSBabel.