The laptop PCB is my first interest personally. It would be mostly similar to the flying squirrel and router as well, no?
I'd be glad to help, but I have no experience with PCB design. Very interested in seeing something specced out enough to work on bodies, though. Not sure how easy it would be, but I would definitely like to see constant placement of external connectors, screw holes, etc. so that the whole board could be swapped out in the future.