This is one of the best ones we've come across....   No strings attached! Whether its business cards, post it notes, postcards, invitations,address labels/rubber stamps the list goes on.... Just log onto this web site and choose your design etc and they'll send it out to you. I think they just charge for postage, but its a small price to pay for what you get in return. They send you a bit of advertsing material with your order, but there is no obligation to buy anything else.  They give this stuff away for free so you can see the quality of their products in the hope that you'll buy some more.

The next one on the list doesn't give away freebies so to speak but they have regular competitions that you can enter to win various different prizes: