You can use Dry Erase cards to replace the large amount of index cards you end up using when playing a game of Fate the RPG (or any other Role Playing Game).
Because the cards are blank and you get 30 in a pack, they are compatible with Fate Core as well as most of the other Fate adaptations eg: Atomic Robo, Diaspora, The Dresden Files and Houses of the Blooded, or you could use them to make your own!
The Dry Erase Cards can serve any number of adaptations for your Fate game, some examples:
Plus any more you can think of! Dry Erase Cards are a reusable mini whiteboard that can be used for pretty much anything related to writing things down which are often corrected.