The Central Ohio STEM Expo is an annual event designed to engage students in grades K-8 with STEM-related activities, taking place on the last Saturday of February. Organized by a dedicated committee, the expo features hands-on activities from various exhibitors in tech and engineering, aiming to spark interest in STEM fields. The planning begins in October, focusing on venue selection, outreach, and sponsorship, while addressing challenges like overcrowding and parking. Unique presentations, such as those by the 'Bugman,' enhance the experience, and post-event feedback is sought for improvements.%0aRecommendations for organizing the expo highlight the importance of committee involvement and maintaining free attendance to ensure accessibility. The event has grown significantly, expanding from under 200 to over 500 students annually, with local professionals invited to participate as exhibitors. The next expo is scheduled for February 29, 2020, at Worthington Kilbourne High School, featuring various engaging activities, and contact information for speakers and resources is provided.