Christmas carolling is a very popular tradition in Greece where are young kids go from door-to-door with their parents singing Christmas carols to neighbors, family, and friends. Sometimes, people will give the kids money or small gifts, or just enjoy their beautiful voices. This tradition seems to be dying down, but it is still in existence as it has been happening in Greece for many many generations. Also I assume it's not as popular during Covid. But nonetheless, people gather in their homes amongst themselves and sing to continue caring the Christmas cheer, even during these hard times.