Data Glove - I built this data-glove as a communication device for divers. Its using the general/international divers sign language and translates them into digital signals that can be sent via ultra-sonic waves under water.
more info at: http://interactiondesign.se/jannes/wordpress/?p=20
Flash - Fly North Europe - an interactive (google earth like) map. you can fly from the north of germany to scandinavia. use your mouse to control speed and direction.
you can try the interactive flash at http://interactiondesign.se/jannes/wordpress/?p=16
Experience Prototyping with Tellart - After a certain time of sitting, working and starring at the your computer screen, the picture on the screen seems to shrink. You have to take both handles and pull as hard as you can, to drag the picture on the screen back in its normal position. But its not possible to do it on your own, so you have to ask a workmate or friend to help you...
more info at: http://interactiondesign.se/jannes/wordpress/?p=68
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Hard- & Software Sketching