Did a spacesaving mod and thought that this thread was as good a place as any to post it. It's effectively just a much lower quality copy of lowpoly's wonderful looking miniguru, sans the trackpoint, programmable layouts, removable cable, nice case etc.
I took a G80-3000, UK layout, noted what cuts connected to where, and removed the alphanumeric part by scoring and snapping the pcb, which worked much better than expected. Then I soldered a few wires onto the board and connected them up to the controller. My soldering is so terrible that I'm quite surprised that everything works, this is the first time I've so much as looked at a soldering iron in about 3 or 4 years.
The case was made out of two halves of a floppy disk drive which holds the pcb in place, and a metal plate from a dell rubber dome that I cut and bent into shape. Very ugly and cheap, but fairly effective, and gives the keyboard a surprising amount of weight and heftiness.
The bottom has one of those non-slip mats attached to it which prevents the keyboard from sliding around even with a pretty significant amount of force applied to the side of it. It's covered in electrical tape to try to cover up the protruding metal bits and make it look a bit better (which it doesn't).
Anyway, to pictures. Sorry about the quality, phone camera.
Dimensions are 29.5x11.0x1.7cm for the base alone, and the key switches+caps add around 2cm to that height. Fits on my netbook nicely and still allows me to use the trackpad, which was half the reason for doing the mod, so I'm pleased. As I wrote before, it's quite heavy for it's size, which gives it a fairly solid feel in spite of the poor build quality. Haven't weighed it yet, might do so tomorrow.
It's also quite a lot quieter than the original keyboard, with less pingy resonance than in the plastic casing of the G80-3000. Key feel is pretty much the same, or at least I can't detect much of a difference.
Anyway, fairly happy overall. Left win key is assigned to Mode_switch, and couples up with hjkl to do arrow keys, and np and bf to do pgdown and pgup and home and end respectively, whilst the right win key (swapped with menu key so it falls under the palm easier) is a normal mod4 key which handles volume and brightness. All of this is done in software with xmodmap and xbindkeys.