Here at Fox.Build we are all about finding creative ways to do things. Aditya Bawankule created this light up homecoming poster to ask someone to go to the dance with him, but it only works if you say “You light up my day, will you go to homecoming with me?” She said, “Yes,” by the way.
You can find the LED matrix Aditya used here: https://www.adafruit.com/products/555.