I don't think you can help loving letterpress goods. They're beautiful, timeless, and so much more accessible than a few years ago. We're going to have a couple of letterpress artists at Indie Craft Parade this year--all of whom are fabulous. But I just can't get over the colors and designs of Concrete Lace. They have a variety of letterpress greeting cards for all occasions, and you're definitely going to want to stock up. Unfortunately, there's a good chance none of your friends will receive the cards you buy. They're just too gorgeous to give up.
Concrete Lace has a well stocked etsy shop. They also do custom orders.