Enjoy a little taste of life on the grid! While watching TRON: Legacy recently, I decided that my next party needed to channel some of the cool vibe of the Daft Punk dj-ed bar. Most people are probably familiar with the fact that gin and tonics glow under black lights (there’s even a great instructable about it) but what if you’re not a big fan of g&t? Thanks to the fantastic Kryptonite Candy instructable, I learned that vitamin B2 (also know as riboflavin) glows yellow. I decided to experiment to see what adding tonic water and B2 could do to some of my favourite drinks.