Inspired by Google's move to remove @organicmaps from the Playstore without warning, I finally decided to move my > 3,000 Google Maps saved places to Organic Maps. To facilitate doing this for others' benefit, I made a quick webpage to convert your Google Maps GeoJSON data to a KMZ that renders well in Organic Maps.
https://rudokemper.github.io/google-maps-places-to-organic-maps/