One of them is a stamp set and coordinating Sweet Cuts dies with Christmas words. See the word Believe in my card below? That's one of them. I only used the die for this card, but you'll see some projects with the stamps, too.
I die cut the word twice - once in pink and once in white, which I used to create a shadow effect. I really like how it gives the word a lot more dimension and makes it "pop" off the page. The heart and tag are also Paper Sweeties dies from the Beautiful Little Wishes set.
Here is a list of the entire design team. Come see their creations for more sneaks.