Here’s a little something I put together this week: Pinhead Map Icons. I was tired of digging through a bunch of different sources to find good cartographic icons, so I compiled all the public domain sources I could find into one unified set. You’ll see familiar faces from the likes of iD, OSM Carto, and National Park Service maps, plus some newcomers. Let me know what you think!

https://pinhead.ink/

Pinhead Map Icons

Quality public domain icons for your map pins

@waysidemapping https://pictogrammers.com/library/mdi/ could be a good source as well (though it may not be strictly cartography-oriented).
Material Design Icons - Icon Library - Pictogrammers

The original. Following Google's Material Design guidelines for system icons, MDI is our largest library, touting over 7200 unique icons!

@arthurwelle looks cool but appears to be copyright 🤔
@waysidemapping This is what they claim: "This package is released as free, open-source, and GPL friendly by the Pictogrammers. You may use it for commercial projects, open-source projects, or anything really."
@arthurwelle Okay I found the license. The icons are Apache 2.0 which has a few strings in the redistribution clause which seem to prevent inclusion in a CC0 library: https://www.apache.org/licenses/LICENSE-2.0
Apache License, Version 2.0 | Apache Software Foundation