Benjamin Graetz contributed to the hackclub/dinosaurs repository by updating the README documentation to introduce a new dinosaur image, aligning visual assets with project branding. He focused on asset management and documentation clarity, ensuring that references to the new image were consistent throughout the README. This work improved onboarding for new contributors and streamlined the asset pipeline. Benjamin utilized Git for version control and markdown for documentation, demonstrating careful commit practices and traceable changes. While the scope was limited to documentation and asset updates over a one-month period, the work addressed project clarity and maintainability, though it did not involve bug fixes or code changes.