We needed to put our team number on our cart, and just paint is a bit boring, right?
The sign itself is 3D printed with 128 ultrabright blue LEDs in it. After completion, we decided that in the spirit of the name of the team, "Technical Difficulties," it would be cool if the sign looked like it was shorting out. I added a few bonus cool patterns. There's still a TON of room to do more stuff but this is probably good enough for a sign.