What if you’d like everyone to know your current mood via emoji? Or what if you want to cosplay Twiki, complete with Dr. Theopolis pendant? Or maybe you’d like to have many different colored bow ties throughot the eveining? In that case this wearable light box project from jenario171 that uses the Adafruit Feather. Here’s more from Instructables:
I will walk you through how to create your own wearable light display box. The array of NeoPixels illuminates a card displaying custom patterns and designs. Here I have several smiley-face icons illuminated. A single face can be illuminated to show others your mood or current feelings. Other cards can show a name, message, business logo, or anything you can design.