Veblen goods in the dark
For when you want people to know how high status you are, regardless of lighting.
1. The glow in the dark iPhone case
2. Nothing says I have crap taste in music but money to burn like glow in the dark beats (by Dre) skin.
3. Conspicuous consumption doesn’t get less utilitarian than glow in the dark sunglasses.
Culled from here.