New business cards, almost

I got some new business cards in the mail today. I had ordered them a few weeks ago from vistaprint. There is just one small problem with the cards, there is nothing printed on them. Completely blank (unless you count the vistaprint advertisement on the back. What can I do with 250 blank business cards? Any ideas, please let me know.

So, now I wait. They are reprinting them and sending them "priority," which means I should get them by next Friday. So, they took care of the problem and were very nice about fixing it and making sure things got worked out. But, really what am I going to do with 250 blank cards. Maybe I can hand them out to people I really don't want to contact me back.