In my travels I have some seen some truly amazing projects that use RGB LEDs to create incredible effects. Some are big, some small, but they always make an impression.
The EspRing is a new 12-bit neopixel ring that uses ws2812b RGB LEDs, but here’s the big news: it also includes an ESP8266 12E module built right into the design. The result is a neopixel ring with an onboard microcontroller, which removes an extra step towards your own personal light show.
The LEDs are individually addressable, so you only need one data pin from the microcontroller, along with VCC and GND to run a bunch of them. You can even control the color and brightness of each pixel.
Combine this with WiFi support from the ESP module, and you can even change effects or reprogram it remotely.