The US Postal Service has jumped on the eco-conscious bandwagon and created the "Go Green" forever stamps. The "Go Green" series comes in a pane of sixteen stamps. I'm thinking they might just be perfect for your invitations for the big day or your "thank you" notes.
Not sure how long the USPS will offer these, so buy up a bunch soon. Because they are the "forever" stamps, they can be used regardless of any future postage increases.
What a great way to share some eco-friendly tips with your guests and they are pretty cute, too.Happy Planning,