Here are some more of those cards that fold flat and fit into an A2 size envelope, but when open it is like a framed picture. This is a file from the Silhouette store and super quick and easy to put together. To see the first post of the other design go here.
The paper is some scrap DCWV and American Crafts. The twine is from My Craft Spot, it is Pea Pod and Mandarin.