I use my PocketPC a lot. It keeps me organized and I put research papers on it to read during lull periods. Over christmas, my wife talked me into buying a one gigabyte flash card (I only wanted the thirty-two megabyte). I've been filling it up with classic computer science books and various research papers. I wasn't even making a dent in it. But, I found the perfect use for it. I got the Squeak3.8 DVD and it has the Squeak Swiki. Beautiful. I put the Swiki on the card last night and now I have it all in my pocket.
Of course, I still haven't made a big dent in my one gigabyte card....=) How cool is that?