I bought myself a nice Standard TM Glove for my ThinkPad T40. Its a neoprene cover for your laptop. Its actually designed for Apple Powerbooks and iBooks (not that I wouldn’t like one) but they seem to have enough stretch in them to accomodate my ThinkPad. A great solution if you don’t want to have some dorky-ass laptop bag and already have something you like that mightn’t necessarily be for a laptop.