Goodwill is a nonprofit organization that operates donation centers across the country, and they accept a variety of items, including gently used clothing, household items, and even furniture. While they may not specifically accept Christmas trees, they may accept artificial trees, wreaths, and other decorations that are in good condition and can be reused by others. If you're unsure about whether Goodwill will accept your Christmas tree, it's best to contact your local donation center and ask if they accept this type of item.