These MacBook and MacBook Pro sleeves from ColcaSac are the type of sleeves you would get if you wanted to protect your laptop while carrying it to and from your comparative literature lectures at Wellesley. That doesn't mean they're ugly.
Besides being made of "environmentally friendly fabrics", the sleeves are pretty well padded (hemp has a lot of cushioning, it seems) and have an "earthy" feel. If you're the type of person who likes to advertise your love of things that come from the ground, while at the same time protecting your electronics investment, you could do worse. And at $30ish each, it's not like they're overcharging you for being green either. [ColcaSac]