The Game Crafter: Buy Board Game Parts and Tokens
The Game Crafter is a website that allows you to purchase unique game parts for your board game and buy/sell independently made board games. The store has all sorts of things ranging from money, spinners, and yes, even a options for your favourite kind of dice.
The Game Crafter refers to themseleves as “the world’s first web to print board game publisher.”
If you’re making a board game you might want to check these guys out rather than looking for salvage from other board games.