title_body: How do I convert an RSS feed's entries into an ebook? How would I convert an RSS feed into an ebook?  I know that calibre can already do this but it is a bit bulky and I don't feel confident writing a recipe in Python to try to do this.  I do have access to pandoc and other tools on Linux, though.
upvoted_answer: If all you're wanting is to easily get specific RSS items to a Kindle, Instapaper has a service that makes this very simple:
  
  http://www.instapaper.com/user/kindle
  
  That's how I do it, and only for specific posts that I'm actually wanting to read on my Kindle. My usual workflow is when I'm reading through my feeds on my iPhone, I click "send to Instapaper" on longer posts that I want to read on my Kindle.