I found instructions to make a neverending card thanks to the All Things Tim yahoo group. A neverending card keeps opening and opening until you get back to where you began. And, you can turn the card over and do the same thing - never ending!
These cards are quite easy to and quite addictive. Last weekend I ended up making four of these -- three for my kids to decorate and keep. Rachel went through my scrap baset and pulled out lots of pinks and flowers. Thomas wanted his to be all Star Wars. And I plan to make another one with my March ScrapbooksPlus DT kit.
You can find instructions for making the card all over the web. Creations by Christie has an easy to follow video tutorial with dimensions.
Here's my card - the four sides you get when opening from the front.