Everyone has heard of building gingerbread houses for Christmas, but why shouldn’t Halloween get in on the fun? Teenagers in grades seventh through 12th are invited to get in the spooky spirit and build their own haunted gingerbread house using festive candy, icing, and other tasty decorations provided at the library. Space is limited and registration is required, closing at 2 p.m. the day of the event (or when all spaces have been filled). Wednesday, October 9. 3–4 p.m. Sonoma Valley Regional Library. 755 W. Napa St., Sonoma. For reservations, visit tinyurl.com/2ar2ad62.