Comment by pferde

After you create an OSM account, there is also https://maproulette.org, which has tons of little tasks to fix, grouped into challenges, and many of them can be done using just the aerial photos, from the comfort of your seat.

Then there is also mapping for humanitarian purposes, https://tasks.hotosm.org/, which has mapping projects prepared by disaster response teams, and you can help by updating maps of areas recently affected by disasters. E.g. recently there was a lot of mapping in the area hit by the August river flood in Nepal.