I just got some holiday cards myself (but at Papyrus). Amazing how unappealing most of them are...I really like stuff that's non-specific, since most friends are agnostic/atheist/pagan or somesuch, and it seems hard to find those with a design I like.
Didn't think to check the Paper Store. They do have some interesting things there. Like classes on bookmaking. Or am I confusing it for the Paper Source?