Luke Cavagnac, the artist and proprietor of The Invisible Fountain, has been an important figure in the life of Easthampton’s Eastworks community. In this, the ninth year of its existence, the gallery hosts a celebration on the 10th day of the 11th month of the 12th year. Nov. 10, 6-9 p.m., Eastworks Building, Suite 206, 116 Pleasant St., Easthampton, (413) 896-8073, www.invisiblefountain.com.