Christmas cards have become very creative and stay up to date on technology. This ecard I got from my Grandma is very cute. It is interactive and allows you to click on things which then are animated. Snowballs become a Snowman. People start to skate with the a click of a mouse and snow starts to fall. I assume the trees in the back are an image but that everything else is animated in a 3d software. The skaters movements were probably key framed. This is an interesting use of 3d. I mainly think of animation or videos but not ecards.