Abstract The intersection of hardware security and public education often suffers from a lack of accessible, engaging, and low-cost platforms. The Eclypsium Hardware Hacking Coaster —a deceptively simple electronic toy resembling a roller coaster car on a track—has emerged as a novel teaching tool for firmware exploitation, side-channel analysis, and hardware reverse engineering. This paper examines the coaster’s architecture, its vulnerability surface, and its pedagogical efficacy in demonstrating real-world attack vectors such as debug interface exploitation, firmware extraction, and fault injection. We argue that the coaster serves as a microcosm of modern embedded system risks, bridging the gap between abstract cybersecurity theory and tangible hardware manipulation. 1. Introduction In 2023, firmware security firm Eclypsium introduced a provocative conference swag item: a battery-powered plastic roller coaster car that lights up and plays sounds as it rolls along a plastic track. While ostensibly a toy, the device was deliberately designed with multiple hardware security flaws. The “Hardware Hacking Coaster” quickly became a cult favorite at security conferences (DEF CON, Black Hat) as a hands-on lab for aspiring hardware hackers.