[moffkalast]

Mount LEDs inside the skull, got it.

[aruggirello]

Or replace bone with glass, ending up like those famous crystal skulls from Mexico. But algae might then bloom and grow in uncontrolled fashion. You'd need plancton then, and maybe krill or even fish too - enter skull aquariums.

[hirenj]

Ancient medicine solves that problem

https://news.ycombinator.com/item?id=43196488

[bamboozled]

More time in the sun ? :)

[alt227]

Inside your head? Maybe we need a new 'head sunroof' or similar.

[card_zero]

Eating nori, sounds reasonable, I feel smarter already.