Favors are a fun part of weddings, but unfortunately, they aren't always eco-friendly. Aunt Susie may enjoy the bride-kicking-the-groom's-ass wine cork, while friend Jim may chuck it out the window on his way home (bad Jim for littering!). Alternatives to wedding favors are gaining popularity. For instance, at Earthly Affair, I've had quite a few brides actually request additional cards be printed to let guests know that a donation has been made in lieu of favors.
However, when you want something cute, matchy matchy, or maybe just handcrafted, you have options. Personally, I really love these little matchbox favors. I'm guilty of the box favor since I made them for my own wedding. Some people will keep them, some won't, and that's just something you'll have to deal with in your own eco-quest.