Magnetic Yellow Card,
-text from the card
Subversive intervention via business card-sized magnets, personal edition of 200.
Here is a pdf of the Magnetic Yellow Card. This project is open source, which means that I am supplying everyone with the means to make their own magnets. Feel free to upload this pdf to any magnet-maker of your choice and self-produce as many magnets as you would like. That said, under the Creative Commons License you must attribute any authorship of the work to me and you may not reproduce the work for commercial purposes.
I chose this company to make my magnets, but I do not endorse them for any particular reason. You can use any company that you choose to reproduce as many magnets as you would like to.