I spent 3 weeks with Anirudh Sharma, an MIT Media Lab graduate in Fluid Interfaces, and Nitesh Kadyan tinkering around in their lab in Bangalore.
I worked on a whole lot of small projects during this period - varying from monitoring ECG on your bi-cycle handle to making a voice controlled interface to control the crazy-flie nano-copter to transferring data over the audio jack on your mobile phone.