PTI Movers and Shakers Zippers die : Made something very similar to this. I found the zipper die cut to be difficult to work with, but I love the visual impact of it. I ordered the die after I saw this card... had to have it. I've used it twice and find the results to be worth the extra effort.
This card by Laura O'Donnell is so fun! I love that she added a pull strip (with the Pull Strip die from TechniqueTuesday.com) element to it. Rip it off and you'll find there is either a gift card or cash hidden in the card.