I threw together a display this week for one of my teachers who wanted a sign to spell out words or phrases. She's a fan of Stranger Things, so she asked that it be based on the scene where Christmas lights spell out words on a wall. It uses these individually addressable RGB LEDs with an Arduino using the FastLED library. I wrote a script that takes user input from the Arduino serial monitor and spells out whatever you type in. It will also spell out a phrase stored in the memory if you input nothing. It's messy, but it works just as intended. It didn't take long to make and it's a fun idea for a quick project.