@Stefan Kremser and I had a little chat about badges at the 34C3 chaos communication congress and that he'd like to see a spacehuhn badge - so we agreed on me creating this little RGB LED badge thing, not unlike the #Tindie Blinky LED Badge.
I've decided on using the edding 4200 series on this run. I had to go over twice to get a good covering. Next time I'll try nailpolish though, since the color is still removable with Isopropanol, but tougher than with the 300 series.
I'm currently deciding between 3mm / straw hat / 5mm LEDs and whether the animation should be slow or fast. I could only find 5mm RGB flashers that are diffused, but it would be so cool to have the other ones diffused as well. So I've ordered a bunch (way too many) LEDs and hope they'll arrive soon.