Pretend that you work for a casino in Las Vegas as a blackjack dealer. Who are the people that bet at your table every day? What about the casino - how much to you know about how it is run? Whose secrets do you know? Do you have any secrets of your own? Write about it in your diary.
(It has just occurred to me that the word "diary" may be too girly for you guy writers. Would it be better if I changed the name of these exercises to "secret journal"?)