Promoting at in-person events - This would help raise awareness of Optimism among attendees and attract new users, developers, and projects to build on it. Promoting via social media - Engaging communities on platforms like Twitter and Discord would help spread the word about Optimism to a wider online audience. Using Optimism for a community NFT project - Successfully issuing and trading NFTs on Optimism would demonstrate its functionality and capabilities. Promoting future drops could encourage others to also use Optimism for applications.