I just ran in to these plantable seeded papers ( saw them on real simple) from Botanical Paperworks. I have had a few weddings give them as favors and now I do think they may be really catching on wth the whole green movement. They offer a range of products and notecards with imprinted messages, that are embedded with wildflower seed. I usually am not big on weddng favors but this is pretty cute. Most of my brides if they do favors it''s either in a form of a donation to a favorite charity or a late night sweet, candy bar, milk and cookies, etc.