I’m a frequent contributor to OSM, along with being passionate about individual privacy. Adding Flock cameras to the map has become a new hyperfixation for me. The best part is that when tagged correctly, they appear on deflock.me along with OSM. It’s a simple way to help your community know when they’re around these dystopian ALPR cameras. Deflock also has an app, although I cannot attest for it - I believe that it dumps the data into OSM too, so it may be better suited for those without OSM experience.
Very cool project. The app seems to be open source too. Sadly the web version seems to be very badly coded and just completely freezes for multiple seconds when you zoom in/out while looking around.
If you’re open to using a phone there is streetcomplete, which seems less buggy. They focus on more obvious features, house numbers, road surfaces, business hours and such