Replacement pieces

Is there anywhere that I should go to buy a spare piece to replace one that I lost? I have somehow misplaced one of the blue presence tokens from my copy of the game. My friends and I have a workaround for whenever we play four player but I'd like to replace the token if possible.

(The workaround is that we treat one fear token as a blue presence token, which works because those two token types have mutually exclusive locations that they are allowed to be in so it's easy to tell which is which.)