This document summarizes a study on reusing plastic bags to save money and reduce waste. Over three weeks, the author's household reused 60 plastic bags, saving $4.20. Extrapolating to a year, reusing 960 bags would save $67.20. More significantly, reusing plastic bags over a lifetime could eliminate thousands of bags from landfills, since each reusable bag replaces an estimated 1,000 plastic bags. While the financial savings are modest, the primary benefit is reducing environmental impact by preventing plastic bags from accumulating in landfills for hundreds of years. The study had some limitations but highlights strategies for plastic bag reuse and reduction.