How can I effectively hide my macbook while traveling to prevent theft I will be taking my Macbook Pro Retina for a backpacking trip and will be working from public places (i.e. coffee shops, public squares) for a while. I am quite concerned though, that it will be stolen. 

Aside from the obvious precautions for theft, like not leaving it out of eyesight, backing everything up to a second disk, encrypting stuff, firmware password, setting up prey etc. I am looking for a way to disguise the machine as something more undesirable than a macbook.

Of course there is always the Book Cover disguise or the option to cover the whole thing in conference stickers so it looks like a piece of trash, but maybe you guys know something equally suitable for this purpose?
Searching on the web for "laptop skin" or "removable laptop skin" would provide you a list of designers and sellers for laptop skins. Buy a boring laptop skin and use it on your MacBook Pro.

Some sites for laptop skins (in no particular order):  


CafePress  
Gelaskins  
Zazzle  
DecalGirl  
Skinit