This is a candle flicker animation for various small boards, always involving the colourful WS2812B LEDs or Adafruit "NeoPixels". I used this to make various Christmas gifts. The first generation of these devices always used Adafruit "Circuit Playground Express" hardware, which is very nice but rather expensive. Later generations used Arduino Nano boards with generic WS2812B LEDs, and in one case I reused an old Raspberry Pi.
In this case the ring of LEDs is covered by a china tealight holder, creating an aurora borealis effect as the LEDs cycle through colours. This used an Arduino Nano.
Here, the ring can be covered by an acrylic dome covered with stars. The program has two modes: in one, all LEDs are lit and cycle through colours, while in another, a single LED lights at a time, so the device acts as a star projector (with no moving parts).