I <3 Hacking.
A cool, addictive mock trading app for adolescents and above to play with and learn about the stock market from.
Collar-mounted camera from a RPi that tells Alzheimer's patients who they're with, using facial recognition.
College student to student tutoring system - barter, not money.
Converts sign language to speech in real time, using Leap Motion. For deaf people.
80% machine 20% dream