Hey, I'm going to do this for my wedding in 3 months for a wedding favor. I just want to spread the word and maybe you can check it out to see if it's right for you.
Oxfam, a great charity organization, does wedding gifts, registries, and favors. We're doing the favors for our guests. You donate money that goes to developing countries (teaching women, starting community gardens, goats and chickens, planting trees and orchards, buying gardening tools and seeds, getting clean water... lots of great stuff). You can tell them how many guests you have at your wedding and they'll send a small card for each guest that says, "In place of a wedding favor, ****** and ***** have donated money in your name to help ______ (Insert the cause you choose to donate too)".
I'm really excited about starting our wedding off on the right foot and it fits in perfect with our theme - gardening! We're donating money towards seeds, gardening tools, and planting fruit trees. I'm not trying to sell anything, I just think that this is a great idea!