If you click on this link, you will be taken to a website full of the most beautiful and fantastical paper creations. If you love paper then you cannot go past Upon a Fold. The stock in their online store is absolutely lovely and so different. It will definitely make you thin twice about buying a card at a newsagent's and then it will make you think twice about even buying a card. Why buy a flat card when you can give someone a pop up castle, or a jack in the box, or a build your own London/New York/Tokyo postcard?
If you look on their blog then you'll see that paper is somewhat of an obsession of theirs. As an Easter gift they've created two sheets to download with instructions on how to make your own origami bunny or chick. Thanks!