This document provides 5 examples of how QR codes can be used to market a business on a budget: 1) Direct users to a mobile website, 2) Offer coupons for purchases over $100 by scanning the code, 3) Include contact information on business cards, 4) Provide real estate listings with home details and pictures, and 5) Give directions to an office or event. It encourages readers to create their own QR codes at the listed website.