I'm looking for ideas since I'm not really good at this sort of thing and there's lots of talented people who visit this forum. I'm mainly looking for something techy possibly mixed in with something organic like a tree or something else. My first idea was some some sort of PCB design (xbox mobo??) but i'm not sure how that would look if it covered the whole lid (maybe just a corner would be enough?).
It would have to stand the test of time and not be a fad that I'm gonna get tired of in the future.
Here are 2 that I particularly like if it's any help:

Link
(nice except for the flowers)
Thanks to anyone who can give me some ideas.
(BTW, it's a 17" MBP)
Phil