Since swapping my MBA 11" for a Powerbook G4 12" , it has now become my companion on my daily commute to work and back with the train. However finding a perfect fitting solution to transport it , hasn't been easy so far. I'm a big fan of Incase, somehow they seem to make the perfect laptop bag for my use, shoulder strap, just enough space, not too bulky , cushioned compartment for the laptop and just enough pockets to store cables, power adapter, a pen, etc .... Currently I'm still using my Incase Slim Sling MBA 13" bag which does kind of protect the Powerbook, get my lunchbox in there , power adapter and cables up front and only be about twice the width of the Powerbook. ( crucial in tight train seats ). I found an Incase Slim Sleeve specifically for a 12" Powerbook on Ebay UK for 3 £ with shoulder strap, a tight fit but the pockets are unusable , trying to get a power-adaptor in there really stretches it and I'll have to go on a diet since my already flat lunchbox doesn't fit nowhere Last but not least , the Tucano Second Skin sleeve I found a while ago, also specific for a Powerbook G4 12" , good option but I prefer to have a bag from which I can easily get/put back my laptop . What does everybody else here use ?