Have you heard of StreetComplete? It's an Android app that shows you open questions/issues with OpenStreetMap in your area, and asks you to answer them.
It's made for people with no experience with #OpenStreetMap, so it shows only very simple questions that can be answered very clearly. ("What is printed on this street sign?", "What's the number on this house?")
Follow friends and discover new ones. Publish anything you want: links, pictures, text, video. This server is run by the main developers of the Mastodon project. Everyone is welcome as long as you follow our code of conduct!