I am also very interested in outreach. During my undergraduate degree I helped run outreach events for the Physics Department, and gave popular science talks on General Relativity.
When at Cambridge I met Alessandro Roussel, who runs the French popular science channel ScienceClic (He also has a growing English Channel). I have been involved (and am still involved) in giving scientific advice for the channel. I was particularly involved in the videos on QFT and String Theory.
Also on YouTube, I was interviewed by Simon Clark for his video on leaning QFT.