I want to suggest you to build a raspberry pi powered mini laptop.Here are some specifications that I imagine of
1)A 7" display ( Maybe TFT but surely HDMI)
2)Heatsinks and fans installed on pi
3)Availability of both OpenELEC (xbox madia centre designed for Pi) and Raspbian (Debian Linux for Pi)
4) Built In SD card cases ( i mean they are on the case of laptop so you can change it whenever you want)
5)Some Led's that can show the stats of everything ( for example battery )
6) Built in rechargeable battery
7) A VERY COOL MATTE PLASTIC ENCLOSURE
That's it I wanted to build one and show it on Youtube but I really wanted to suggest Ben because i'm inspired by him
Thanks for reading this
Waiting for the video