Agile Modeling Tool
I saw this written up somewhere - these are sheets of white plastic that hang on the wall with static cling - a portable, put it up anywhere instant whiteboard. Just got them in today - I'll have to see how they work out. I put one up on the wall next to my desk for notes and stuff. We already have one large whiteboard we use - and not much more wallspace - but this will be helpful, I think.