In this project my son and I build a new butcher block surface for a coffee table. We used a neon sign transformer to burn the Lichtenberg traces, then drilled around 400 0.3mm holes for fiber optic cables. We cast the top in 1/4" of epoxy.

Affiliate links for materials used below:

Fiber optic kit:
https://amzn.to/38YPXFZ

Epoxy:
https://amzn.to/2Q6mROd

Miniature chuck:
https://amzn.to/3eCNLrb