This is a neat little webcam that most importantly comes with a stand. It autofocuses, can take pictures and can be clamped to your computer. For us, it comes into its own as a document camera and a quick read of the reviews on Amazon shows that it is already working well in many classrooms.
Today, I had a go testing it in our library where we have a good laptop and projector (unfortunately it's one of the few places like that in our school). It was simple to set up. Pop the CD in the drive, load the software, plug in the camera and there you go.
Laptop and projector
A book under the camera
Image on the laptop
Projected onto the screen (looked better in real life than it does here).
The stand does need to be raised a little if you want to see the whole of a page. And I found that lighting levels also need working out. For example, sometimes it helped to have a lamp cast some extra light (the ELMO has a built in light) in case light levels have to be lowered for the projector to work. But overall this worked really well.
What does it cost? Just under $70. Less than a tenth of the cost of the ELMO (currently selling for over $700 on Amazon and that's a discount!). Add a lamp at c. $20 and for less than $100, we could kit a classroom out with a new way to share work, read together, look at objects, share scarce books and photographs, Skype with other schools - so many ways to use this handy tool.
Of course we still need to get projectors and laptops into the classroom first....