We've all seen engravings  on iPods  and laptops, but I don't think I've seen them look quite so tattoo-like as I did at ETCHamac's  booth at Macworld. ETCHamac does custom engraving exclusively for Apple  products (which you can now purchase new from their website and choose a design), and is newly engraving iPhones  as well. I would definitely have a hard time choosing a design to tattoo on my body , but maybe it could be a low-commitment substitute to put it on my laptop instead?! Then again, Apple's products are so well-designed that I would have a hard time messing up their pristine surfaces. Have any of you engraved your gadgets, or would you?