This is a site that can be used to make your own comic books. At the bottom right hand corner there is a link that if for schools, stating, Learning with Comics. This could be a great way to work with elementary readers to create their own interesting storyboards.
ToonDoo allows you to create your own comic strip with speech bubbles. You can also upload your own picture and be the character in a comic strip. This could be used for story telling, a culminating activity for a research project, or creating a book trailer.
This web 2.0 tools allows a person to design their own comic strip. It can be used for language arts. This would also be a great tool for incorporating language arts into other areas of curriculum. This could be something that a student could get on by his self and work on individually. It could then be shared by the entire class by viewing it on the SmartBoard.