Image Gathering Project Part 1

Here are the pictures I collected for the project.
Any guess on which design elements they represent?

You can find information about each element at my last posts;
http://annkim88.blogspot.com/2009/09/image-gathering-project-part-1-balance.html
http://annkim88.blogspot.com/2009/09/image-gathering-project-part-1-balance_01.html