First off, many many thanks to the people behind FastLED, it has made making many colourful illuminated things simple for me.
I’m even pushing for projects to use it at work now, everything looks better with flashing LEDs 
For this holiday season I’ve added some to NixieBot, so there are WS2811 with twitter control in my workshop now…
https://hackaday.io/project/9155/log/50904-blinkenlights-added