Luidia’s eBeam Edge interactive whiteboards with projectors
We love news of projector technology being mixed with others types of interactive media.  Disney is working on their version, microsoft is working on their omnitouch, and now Luidia has an interactive whiteboard.

The device can be attached to a wall and plug in a usb cable and you are ready.  There are also BlueTooth versions which would let you not need that usb cable.

Pair this system with a micro projector or even a pico projector since they are getting brighter and you have an interactive whiteboard solution.  With the stylus you can choose from a palette of controls to change colors, line sizes and other features.

With the ebeam hardware being small and portable, it would be easy to put all your essential tools in a small bag and carry it from classroom to class room.