Demo Creator is a command-line tool for generating full Sylius instances in an automated way. It simplifies the setup of client demos, Proofs of Concept, or sandbox environments by letting developers define plugins, load sample or real product data, and apply theming, all without manual configuration. The tool can deploy to a local machine or server and supports modular customization through event-based extensions. It is particularly useful for agencies and solution partners working on repetitive Sylius-based projects.