littleBits // The DIY Synth in collaboration with KORG
"littleBits makes an opensource library of electronic modules that snap together with tiny magnets for prototyping, learning, and fun.
It consists of tiny circuit-boards with specific functions engineered to snap together with magnets. No soldering, no wiring, no programming, just snap together for prototyping, learning and fun. Each bit has a specific function (light, sound, sensors, buttons, thresholds, pulse, motors, etc), and modules snap to make larger circuits. Just as LEGO™ allows you to create complex structures with very little engineering knowledge, littleBits are small, simple, intuitive, blocks that make creating with sophisticated electronics a matter of snapping small magnets together.”
Check more here: http://littlebits.cc/