Having a document camera (like Ziggi) available in the class allows teachers to instantly display materials to everyone using their projector. Whether you want to demonstrate an excellent piece of student writing, a math solution, a science experiment or a diagram from a social studies textbook, a document camera is a quick and easy way to enhance those teachable moments.
Here is a link to the Canadian supplier of this device.
A list of 50 ways to use a Document Cameras in the classroom: http://www.edtechnetwork.com/document_cameras.html