Why not? Forget that box of boring business cards and get some really great ones from MOO. Choose one of their excellent designs, or you can upload your own images—and every card in your order can have a different design if you want to go nuts.
These cards really do get attention, so they are worth the small investment. Use them to invent an extra/alternative version of yourself, start that freelance thing you’ve been thinking about, or add some snap to your professional image.
And if you don't already have business cards that say Writer . . . why not?