Improved 3D viewr for KiCad
Since the BZR-4365 release, pcbnew (the layout part of KiCad) got an impressive quality upgrade to its 3D viewer. www.kicad-pcb.org
Coat-Button - latest incarnation (backside)
This board is now capable of single and dual color operation. In case of single color I can just populate the alternate 0603 footprints on the back side. That's easier than using the 0402s on the front.
Dual-color Coat Button variant
This one is just for the heck of it. I don't plan doing 0402 parts on a regular basis.
Wearable Electronics - A small coat button
Once connected to power using conductive thread, this little thing (just 18mm diameter) will blink / fade its LEDs. Switching between modes is done by shorting the two marked pins before powering up the device.