Sure, in fantasy RPGs you'll draw ideas from Lord of the Rings and Conan, for Sci Fi games you'll have ideas from Star Wars and Star Trek, and for Cyberpunk you'll have things from Neuromancer and Blade Runner (just to name a few), but what are things that you have or currently implement in your RPG playing, world building, and/or making that you think not many others do?

Rules
1. Any genre, any reference/use of anything. Why is this rules section even here?
2. The idea of "unusual" is subjective and opinionated. If you think no one would usually reference that, it counts. Unless you would like to argue about it that is.

For me, I've taken a lot of high fantasy inspiration from the songs by the bands Twilight Force and Glory hammer. One example in particular is that I've had an idea for a Half Elf Rogue character for D&D or Pathfinder (whichever I get to use it for first) named Lynd, based off the character of the lead guitarist of Twilight Force.