I glued 576 pcs. WS2812 LEDs in 8 strips to a PVC pipe. Driving it with an ESP8266 and a 60A PSU, added some multiplexing electronics (some sensor will also come). The project will be revailed at Christmas this year.
The whole project started to work. An external switch and a few sensors are still missing. But you can see the current status on the pictures and this video together with the web interface next to it: