Ask HN: Ideas to present at code camp?

I'm off to a company code camp with a group of 30 to 40 web developers (Front-end and back-end) - we're a digital advertising agency, and have the opportunity to do a 15-20 minute presentation. I want to present about work efficiency and would love some ideas/examples. Some of the things I want to talk about are the use of existing APIs to get things done quicker rather than building from scratch - such as Face.com API's mood detection to determine moods in photos (for instance), or adapting CoffeeScript instead of using JavaScript for faster coding.