Facebook Marketplace: Facebook Marketplace has a Free Stuff category where you can find free things locally.
Buy Nothing: The Buy Nothing app connects you with people in your community who want to share and receive free items from a wide array of categories.
Craigslist: Craigslist has a Free Stuff category.
Friends / Family: Ask your friends and family if they are trying to get rid of the item that you want.
Freecycle: This app connects people who are wanting to get rid of things instead of them going to a landfill.
Check for free things on the side of the curb in neighborhoods: Occasionally neighbors set things out on the side of the curb and put a free sign next to them, hoping someone else will want them and take them. I can seen a free office chair, lamp, bbq, and more!
Nextdoor: This app connects you with others in your neighborhood and they have a Free section.