Not sure if I'd call it "non-trivial" (as I'm using it to make other code more trivial), but I use IFTTT to ease up on the coding required to fully automate ongoing background personas for bots/AIs.
Rather than coding boring frameworks to post to Facebook/Twitter/Tumblr/500px/Wordpress/etc (or spending time implementing/maintaining existing libraries), I just hit my web APIs to fetch what to post and post it through IFTTT. Sucks that some destinations (e.g. Facebook) have the source app it posted through ("IFTTT") at the top, but most people overlook/ignore it.
Rather than coding boring frameworks to post to Facebook/Twitter/Tumblr/500px/Wordpress/etc (or spending time implementing/maintaining existing libraries), I just hit my web APIs to fetch what to post and post it through IFTTT. Sucks that some destinations (e.g. Facebook) have the source app it posted through ("IFTTT") at the top, but most people overlook/ignore it.