I have to say my favorite purchase from last year were cards made from recycled paper embedded with wildflower seeds. The card served two purposes. 1. a nice greeting card with a cute peace love print and 2. a pretty & unexpected plant in a few weeks.
Did I mention, they have food vendors and funky music also? Well yes they do. Needless to say, you should definitely make some time that weekend to make it out and support your local artists.