Most of the time if you find something in a bar you take it home. Please don't start with the whole I am a good samaritan garbage. And yes its human nature to be shady, but of course no one here would be like that, oh no. Then again who would even care about finding a palm.
One of the most common traits of thieves is that they believe everyone else thinks the way they do.
If I find something in a bar I am not taking it with me (pretty girls excepted), I'm handing it over to the bartender.