Tag Galaxy is a different way of exploring a topic through seeing what related pictures people have put on the Flickr images site. Type any topic or concept in, and it will coat a globe with images, which you can rotate or click on to enlarge. A good IWB tool to get children thinking?
Etherpad is a totally fantastic collaborative word processor. No logins required – simply click to start typing. Send the link to anybody else (by email, through a Learning Platform or simply by writing it up on the board) and they can start typing too, in real time, with each person’s additions in a different colour. At the end, export it into Word or a variety of other formats.