Observer Editor, Free
“Bandemer Park Clean-Up”: City of Ann Arbor Office of Sustainability and Innovations (OSI).
All invited to pick up trash, clear invasive species, and help OSI staffers with other minor beautification projects. Wear long pants, sturdy closed-toed shoes, and a mask if not vaccinated; tools and gloves provided. 3–5 p.m., Bandemer Park (off Lakeshore Dr.). Free. firstname.lastname@example.org.