Go to Atom Tickets.com. Free Movie Ticket (Patriots Day) with code MWPATRIOT (apply at confirmation page). Tickets are available at select locations. Offer is valid for the first 1000 tickets or while supplies last.
Go to PowerBar. one of their PowerBar Clean Whey Protein Bars for $0 with free shipping when you fill out a short form (click the "Take the pledge" button). You're pledging to make a "clean start" like Ryan Lochte, or something.
Go to National Park Service. Upcoming 01/16, The National Park Service is offering entrance to all 400 over National Parks for FREE in honor of Martin Luther King Jr. Day (Valid 01/16). Exclusions apply.