Hundreds researchers are trying to find a way to stimulate human brain. The project is trying to get a result in 10 years. We'll see about that than but for now you can see the article: Supercomputer to simulate the human brain
Something I really liked - Boogie board. You can use to draw and write everything you want and then delete it. As a minus is lack of memory but at least you don't need a battery. See the boogie board here: http://www.thinkgeek.com/product/e330/