Here’s my submission for the PixieBrix Hackathon!
I built an extension that opens a quickbar to grab the timestamp of the video, let me quickly type a chapter time, and then opens up the sidebar menu to show me all of the chapters and timestamps I’ve logged so far so I can copy into my video description.
Watch how it works and how to build it here: Quickly Create YouTube Video Timestamps with PixieBrix - YouTube
Thanks @orlando for the help!