I have a system built on top of Calibre's "recipe" scripts which scans a set of RSS feeds every day at 3am for new articles, scrapes and cleans the full content where necessary, bundles them into .mobi ebooks, and sends them to my Kindle's email address. Amazon's network wirelessly delivers them overnight, and I wake up in the morning with a fresh batch of reading material. It's like a personalized newspaper subscription.

Similarly, I have a self-hosted instance of Tiny Tiny RSS set up with an array of custom scraping plugins to pull all the web comics I follow into one feed, which I consume with the Android client. I'd push this through my Kindle delivery system, but then I'd be stuck reading black-and-white versions of color comics.

Along the same lines, there are a few YouTube channels I subscribe to whose content can be enjoyed nearly as well in audio-only form. As a university student, I do a lot of walking most days to get from place to place, and I fill that time listening to audio content. The same server which runs my news- and comic-gathering systems also watches those YouTube channels, pulls down new videos, converts them to audio, and publishes the results as podcast feeds which I can subscribe to through Pocket Casts on my phone.