The die basically creates a card that's sealed on all 4 sides. To get into it, the recipient has to peel up a middle zipper panel to reveal the inside of the card, along with any goodies you may have stashed inside. You can see a cool demo in this video. (You also get a 3 bonus word dies!)
I think the die itself is designed to hide a gift card or cash inside, but I thought it would be fun to have a little surprise birthday invite inside instead. How fun for little kids to get to tear open a card!
Here's a quick rundown of how I created these invites.
Now we can decorate our card front! Because I would eventually have to create 10-15 of these I wanted to keep it as simple as possible. I used the 'celebrate' die that is included in the set and brightly colored pattern paper.
Scrappy Tape to stick the front panel down. I love this stuff-- it's plenty strong enough to withstand pulling up on the zipper panel.