Do you want to build your own laptop well now you can, two Singapore-based engineers made a open source laptop called the Novena this laptop can come already made in a case, or yuor can just buy the hardware and bulid your own case with laser cutting, 3d printers, etc.
On the Ben heck Show on Youtube, he built a laptop using the Novena open source laptop mother board, below is a series of videos of the build, on part 1 of the series there is a interview with the creators of the Novena enjoy
for more information check out the following articles below
for more Ben Heck videos check his youtube channel, he makes of interesting projects
below is a video about the Novena by the creators of Novena so you can see why they built Novena and what it can do