I have a confession to make, I have been corrupted by one of my best friend to spend hours in front of his 80s sequencer and make my own music. If you are a hardcore DJ/hacker/musician, you might be interested in this cool DIY Pulsar Mini Synthesizer/Sequencer that will let you make some cool 8-bit sounds ALL day long. :p
Video of the Pulsar Sequencer in action:
video://www.youtube.com/watch?v=0