Mood sniffer
Uses a keylogger to sniff emotions (smileys, for example) and procrastination (typing facebook for example) and publishes them to a backend service for playback or datamining, also includes a topmost window sniffer which reports which app is used for how long, and how many keystrokes was used in that app.
MIDI Playback example: https://github.com/possan/midi-curve-interpolator
OSX Keylogger: https://github.com/brunogama/keylogger-osx