There are a variety of ways to carry data with you. You could buy a notebook computer and schlep it with you everywhere. That can be helpful if you need processing power or internet access on the move. Not everyone, however, has the extra cash for another computer, or the shoulder muscle to tote around a heavy laptop. On the other end of the spectrum are USB keys. Small enough to fit on your key chain, but getting huge in capacity, these little gadgets can be the perfect addition to your mobile office. Flash drives cater to almost every need, from storage capacity of up to 16GB to bullet-proof encasement (I wish I were kidding).