Earlier this month some teammates and I were lucky enough to participate in TechCrunch Disrupt Hackathon in San Francisco
Our team project was called “Notifly” and was an online social media aggregation and activation platform. In the end, we used it to watch a twitter hashtag, and launch a compressed air rocket when a threshold was crossed! We used a Spark Core from Spark.with a Relay Shield to activiate the rocket via a REST API! Super cool Here’s a pic of everything assembled.
Anyhow, if you would like to build your own, you can find the instructions for doing so on github at http://github.com/dxdisrupt/rocket