I used the new paper and stamp set that was offered in April's promotion. The stamp set is Four Frames and the paper is Paisley Petals. You should put these on your wish list. They will be available in the 2011-2012 catalog.
I had a question about what stamp sets were used in the SU corporate birthday card I posted yesterday. That card is awesome and was all created in My Digital Studio. Here is the card with the stamp sets used from My Digital Studio. After they printed it, they added a little bling.
Here are the items numbers for the stamp sets in My Digital Studio:
118828 - Party Hearty (This set comes with the My Digital Studio software. You can order it for Photoshop too).
119098 - A Little Birthday Cheer
124015 - Bring on the Cake
All of these sets are available in the big catalog except for Bring on the Cake. It was in the occasions mini.