Colorbeam base

This is designed to hold a colorbeam LED board:
https://www.tindie.com/products/ColorBeam/colorbeam/
It centers the LED perfectly. This a neat way to illuminate your projects.
I used a "Noctural Mystra" (http://www.thingiverse.com/thing:398413) in the photo. The Colorbeam has a kind of soothing movement between colors, not a blinking or flashing.