The Friends of the Norwell Public Library has launched a $10-per-ticket raffle, with a weekend on Cape Cod as prize, in an effort to purchase a computer for the children’s room at the library. The winner, to be determined at a Sept. 14 drawing, will enjoy a three-night stay at a private home during the Wellfleet OysterFest Weekend, Oct. 13 and 14. The home is located by Lieutenant’s Island in South Wellfleet, close to hiking trails and restaurants. The prize also includes a gift basket and a $25 certificate to PB Boulangerie Bistro of Wellfleet. The raffle’s goal is $3,000, and tickets are available at local events, the Norwell Public Library, Buttonwood Books in Cohasset, and several grocery stories, including Stop & Shop Supermarket in Norwell, Shaw’s Supermarket in Hanover, and Foodie’s Market in Duxbury.