Over the last year, I've spent a lot of time setting up new rails projects and tweaking them to be setup just how I like. Around July of last year, I started working on a generator project to setup projects exactly how I like them with just one command. After the Big Nerd Ranch / Highgroove merger, I migrated what was then the highgroove_generator gem to the new bnr_generator gem. There's still plenty of work to do on it, but I find it a very useful tool.
If you'd like to learn more about the motivations behind it, here's the slide deck for a presentation I gave on the project last year to ATLRUG.