This time of year, the velvety purple petals of irises dot Sonoma County hills. Teens and adults can make their own versions of this spring flower at a Paper Iris Folding virtual class. Sponsored by Sonoma County Library, the class will teach participants a traditional paper crafting technique from Holland. This free class will be held on May 10, 6–7 p.m. Participants must register by May 5 to receive the required free craft kit. Register at tinyurl.com/2p9ebz5a.