Tim Shorts over at Gothridge Manor has a short but interesting article up about using Tarot cards as game props. And you know how I love cards! Here, take a look. Of particular interest is a link to an expansion he did some years back on the Deck of Many Things.
In the blog maintenance department, I've added a tag for Cards. Take a look and see if you've missed any Rambles on gaming with cards. Also, on the practical side, if you need boxes to store your cards in, try Hobby Lobby.