I spend about 2 hours on the metro each day commuting. Since I am going away from the city early in the morning and back in in the afternoon, I almost always get a seat. While it is nice to read and relax, I can't help but wonder how much of a time-saver it would be to get some lesson planning done instead and not have to spend so much time doing it on the weekend, so I can do more fun things. Has anybody had luck lesson planning on the metro, perhaps with an I-pad or tablet? Are there any great places in Shanghai to get a cheap one that would have Powerpoint for lesson planning? I am curious what others experiences are and see what advice anyone might have.