http://www.raspberrypi.org/
The roll up looks an amazing idea but seems to not be so good in real life from the reviews I read at Amazon. I have been looking at getting a wireless mini kb with trackpad for a while now but keep on getting put of by buyers reviews.
You will need a powered hub if you are running more than a kb and mouse.
At the moment I am just using my Pi to surf the web and play video clips and pics when I am at me mums. With a bit of tinkering thrown in aswell. I do have some projects in mind but I need to find some spare time to play.
Have fun with the pie making.

















