Not too sure if this is essential but thought I should share it anyway. May be of use to elementary students as it is quite simple to use and may help design comic books, greeting cards etc. (though there are more integrated options if you own a Mac). I am looking forward to their video version though. They state the following (click here to go to the site):
Upload your image and start using the cartoonizer tool to warp, sketch and color your cartoon. Add all kinds of frames, graphics and shapes to your design and then share it on your favorite social networks including FaceBook, Myspace, Hi5, Friendster and Bebo. No special art school education or graphic design skills are needed.
Here’s one I made: