what u do is go to the cashier and say i found this wallet and wouldent mind keeping it if no 1 claims it after 2 weeks and in 2 weeks time u got ya self them money and a nice wallet :P
Well, I would give the wallet to the police, pretending that I didn't stole the money, credit cards, and whatever is in it! But I did! Then go out of the police station, and buy, buy, buy! But, if I know who owns it, I'll give it back, and I mean, all of it!!!
I would most likely return it to its owner cause I'm a good neighbor and I'm not disparate for money, cause the only thing I use it for is to go to the movies.