For my money, a sure mark of a technology reaching maturity (and market acceptance) is when the purely aesthetic customisation options start to appear…

Bonus future-points for the fact that these are being made using rapid prototyping / 3d printing technology. Mass production, pah!

[ Can’t actually remember whose Google Reader recommendations this piece came out of, so – whoever it was – please accept my apologies and an ambiguously-directed hat-tip. ]