Using laptop parts (and a little bit of ingenuity) this could actually exist.
You would need:
A custom shaped shell (with designs)
A custom shaped motherboard
A custom shaped LCD monitor (touch screen if you want).
Custom sound system
Oodles of screws.
A hard drive (this could be a Solid State [SSD] or the traditional magnetic. The SSD will be more expensive and will also have a shorter life, but it will be way faster than the regular HD)
At least 8 GB of Ram (4 is what is ok... but the computer will slow down after many updates.[quicker than with 8])
AMD or Intel processor (Intel would be preferred)
Power supply (mainly a Li battery)
A CD drive (or go the apple rout and make the user use a USB one)
A keyboard (or the more fancy laser keyboard)
A GPU .... Graphics card.
and a Network drive.
(for the OS... you can use Linux.)
All this would cost you roughly... as much ,if not more, as a high end gaming PC.
If you get me the materials I would put it together for you
You might want to take the other guy's advice as well. He seems to have way more knowledge on the specific parts required, and could probably give you a better estimate.
(it is best to go in with as much information as possible.)
If there is anything I can help with, just ask. I would be happy to help if I can!
well... more of a general check list. As computers are pretty persnickety about what will work and what will not. If I stated a specific motherboard, I would also need to state a specific ram and processor. (I really didn't want to do that research as laptops are a little bit harder to make from scratch... much more effort and planning ya know?)
[also I forgot the cooling system. oops]