Mark Rober's first YouTube video showcased an innovative Halloween costume featuring two iPads, creating an illusion of see-through holes in his body. While early, this was a foundation of his future career.

Following his departure from NASA, Rober dedicated himself to creating engaging science and engineering content for YouTube. He focused on explaining complex concepts in an accessible manner through DIY projects and demonstrations.

Rober's squirt gun and glitter bomb revenge pranks became some of his most popular series, showcasing elaborate contraptions designed to deter package thieves. These videos combined engineering ingenuity with entertainment value.

Throughout his YouTube career, Rober has collaborated with other prominent YouTubers, including MrBeast, to create high-impact content and raise awareness for various causes. The collaboration with Mr. Beast alone has netted many millions of dollars for charity.

Mark Rober continues to create innovative and engaging science and engineering content for his YouTube channel, maintaining his position as a leading figure in online science education.