I have a total cheat for book writing: find a project where you can contribute a single chapter. It's an order of magnitude less work then writing a full book, and you get to add "author of a book on X" to your resume.
It's pretty much the other end of the scale in terms of overall benefit from what Martin is describing here, but it's worth remembering that it could be a much less stressful and time consuming opportunity.
Except that would be untrue. You would not be an “author of a book”, but an author of a chapter. Which is still a nice thing for the résumé. But if you overstate anything and are found out, that will be fatal poison, and a stain that could follow you forever.
It's pretty much the other end of the scale in terms of overall benefit from what Martin is describing here, but it's worth remembering that it could be a much less stressful and time consuming opportunity.