The City of Hudson Senior Center and Hudson Area Library host grandparents, children, and grandchildren with a Watercolor Fest to celebrate Grandparents' Day. With teaching artist Gretchen Kelly. Youth and adult participants can bring in a photo with simple imagery they want to paint or they can work from images Kelly will bring in. There will be two sessions from 12 to 1:15 p.m. & 1:45 to 3 p.m. All materials will be provided. Refreshments to follow. Wheelchair accessible and open to the public. Registration required at programs@hudsonarealibrary.org, 518-828-1792 x101, or by visiting the main desk in the library.