Washburn: Washburn Chamber of Commerce hosts Memorial Blood Centers drive, 1-5 p.m., 126 W. Bayfield St. Walk-ins welcome, but appointments encouraged; call 888-448-3253 or visit mbc.org.
Superior: The Barker's Island Farmers' Market, 9 a.m. to noon, Festival Park, near the S.S. Meteor of U.S. highways 2/53.
Superior: 9th Annual Library Trick-or-Treat, 10 a.m. to 2 p.m., Superior Public Library, 1530 Tower Ave. Wear a costume; bring donation for food shelf.
Superior: Superior Animal Hospital and Boarding Suites invites pets and their owners to an open house from 1-4 p.m. at 36 E. Second St. Go behind the scenes to meet the staff and tour the facility. Activities include face painting, cookie decorating, giveaways, prizes, photos, live surgeries, teddy bear surgeries (bring a stuffed animal to fix up), a silent auction for pets in need and a pet costume contest.
Superior: The Douglas County Historical Society presents its fifth annual Monsteriffic Movie Matinee at 2 p.m. at 1101 John Ave. The public event includes a free screening of "Who Killed 'Doc' Robbin," cartoons and more, presented with a 16 mm projector.
Superior: Car seat clinic, 4-7 p.m., Superior Fire Department Station 2, 723 Hammond Ave. Parents can stop in to have their child car seats inspected free of charge. A certified car seat safety technician will make sure child safety seats are installed properly and answer parents' questions or concerns about car seat safety. No appointment is necessary.
Superior: American Red Cross blood drive, 11 a.m. to 5 p.m., Bayside Baptist Church, 3915 N. 16th St. To schedule appointment, call 800-733-2767 or visit redcrossblood.org.