I have a good friend Mary - we both grew up in Hawaii. Mary loves singing, but does not play any instruments strongly. Mary provides name tags and beverages. We have been working on setting up binders of music with chords, lyrics, and melody lines. The idea is that the food is in one room of her house, and the instruments are in another.
People come, set up, and talk and eat.
Of course, not everyone comes all the time, so there is a variety of instruments each time, and people come and go from early to late evening. This is an amazing experience that everyone should at least try. We learn so much from each other. People take turns finding songs to do, and it is up to you if you join in or not. Sometimes we find a song in more than one source, and we need to change the key, based on our melody instruments or singing abilities.