what I have done was to use khp to make things up.
I had what I call baby picture night i had all my regulars names .
When they came up I had a funny clipart for them and a cute saying about them. They loved it.
I also keep their slips and I type them up.
I slipped a ARE YOU PAYING ATTENTION SLIP in with there other ones. I had other saying too to fit thier personality.
They found them cause I heard them laughing.
one thing I also did was " long lost cousin night " where this time I used khp to put clipart of some well long lost cousins some pretty racey too. I had about 30 of them and put four free drink winners. I ask them to pick a number and I pushed that number on the karaoke machine. It worked great just some idea I did at the bar.