My wife and I made a snowman out of plastic cups. It was a nice peace of Christmas and NY decoration. To built your own you can find full instructions online. I liked it a lot and wanted to prolong snowman's life for few more days (months :) ). We use it as night light for kids room.
But now I have a new idea. How about some colors? WS2811 LEDs strip comes to rescue.
Now to make it little bit more technical...
This is a simple BLE device discovery example based on Intel Curie processor - Arduino/Genuino 101.
We will will scan for Tile device. When device is discovered we will check it's RSSI and based on that change to color of a snowman.
When RSSI is low snowman will be blue (cold).
When RSSI improves snowman becomes red (hot) :)
Of course, we can have a lot of fun with WS2811:
Libraries and firmware used: