Here is a temporary display we setup at a local art gallery where we are light artists.
This is three white Christmas trees with the normal lights turned off and strings of WS2801 LEDs wrapping them. We created snowflake-stars out of foam / paper board and attached them to a long PVC pipe and added the same LEDs.
One arduino runs the 267 LEDs / patterns. Pattern details cycled through in the video are stored on eeprom using custom application.
Side Note: The window shown at the start of the video is a LPD6803 based strip on another arduino, not part of the temporary Christmas display.
Merry Christmas and Happy New Year to all.