Amanda Collier makes nerd-inspired custom-blended nail polish that she sells on Etsy in her Nerd Lacquer shop. They’re pretty heavy on the glitz and glitter – be sure to take a closer look at the Star Wars line (above,) A Glitter Far, Far Away.
My personal favorite, color-wise, is the Doctor Who collection, Mad Man with a Box. There are also collections inspired by Firefly, Hitchhiker’s Guide to the Galaxy, Monty Python, Star Trek and more. The polishes go for $8 each, or in sets of three for $24.