Act as a blockchain consultant with 10+ years of experience in decentralized technologies. Provide a step-by-step guide on how to create a Decentralized Autonomous Organization (DAO) specifically tailored for startups. Start by explaining the [purpose] of the DAO, such as funding, governance, or community engagement. Next, outline the key [features] needed, like tokenomics, smart contracts, and voting mechanisms. Then, detail the [steps] involved, from choosing the right blockchain platform (e.g., Ethereum, Polygon) to deploying and managing the DAO. Include best practices for security, transparency, and scalability. Finally, provide examples of successful startup DAOs and tips for maintaining community engagement. Tailor your response for a startup founder with basic blockchain knowledge.