Here is some cool stuff by students at the Royal College of Arts in London:
This radio moves along the scale as it tunes, like a digital caliper:
What looks like a child's train set is actually a record player that runs along chipped pieces of old records pieced together.
Recycled materials are used to create toys. The size of the box determines the size of the toy.
This lamp comes in separate pieces held together by magnets. The source of the light can be changed by rearranging the pieces.
This fan/radiator operates as a bookshelf when not in use.
Photo credits: http://www.wallpaper.com