I've designed my own calling card.
When I go out to a restaurant or a retail store, I leave behind a little something that another person might discover and read. Sure, it might well get thrown away, but there is a good chance it will be read even if only by the one throwing it away.
Why not make one of your own? Feel free to copy this one as-is or replace my blog address with any anti-occupation website you prefer. You can buy sheets of business cards for ink-jet printers, and inexpensive software to print cards, at any office supply store.