Light Pipe Junction

These discs are designed to fit hot glue sticks in their outer holes, and they have a channel inside them that an addressable LED strip will fit in so that the LEDs line up with the holes. The model is parametric and should easily work for 6-30 holes, depending on how tightly you're going to bend the sticks/strip and the size of your 3d printer base plate.

Demo video with some animations here https://youtu.be/9Bnmi--QRW0