The Maryville Public Library, 509 North Main Street, Maryville, will hold the following activities: • Tech Demo Day, including Ozobots, Osmo Coding game and Swift on iPad stations, 2 to 4 pm, Monday, July 15. • Story Hour for ages two to eight, 9:45 am, Tuesday, July 16. • Book Nibblers, 9:45 to 10:15 am,