Here’s a useless cat video…
This is a 1 meter neopixel LED light strip connected to an Arduino which is running Adafruit’s strand test. Each led is individually addressable so this will be fun to play with. Sadly, the Arduino, out of the box, is wifi/network challenged. So a raspberry pi (not the one you eat but the one that runs Linux) will get added to the Arduino.
Our cat seems to enjoy the light show.