Pin It Now! This was the other card we made at the last Stamper's 10 Club. I just loved how the colors came together, and the pop-up mechanism was actually very easy (especially when you use a punch instead of cutting by hand!)
I think this style of card will be really useful for a lot of occasions, and it would be simple to mount on top of a standard opening card, too. I can't wait to experiment with the dimensions!