There’s plenty on this week’s calendar, including the conclusion to a community adult jigsaw puzzle, a night of Christmas Carols, a Chanukah celebration, 37 Main’s free Andrews Brothers Dueling Pianos show, a day of space exploration at Elachee Nature Science Center and shows from Embering Effigy and Mammoth Tusk at Blackstrap Rock Hall and a coming home show from Andrew Jannakos at Branch House Tavern.