Here's a Flip Flap card that we made at a recent workshop using the Nature Walk stamp set. The top right piece folds down and the bottom left piece folds inward to make this into a regular size card. Pretty cool, huh? Also, when cutting this card out of an 8 1/2"x11" piece of paper, you end up with two of these cards.
Here's the finished card. This technique is also on my list for Technique Tuesday so keep your eyes open!