If you find a wallet in the street , what would you do with it

If I find a wallet on the street, I will not touch it and will go further on my business. This wallet could be stolen and the police might think that I stole it. Also, in a wallet could put a small bomb, as a bad joke or entertainment that could damage my hands. My parents always told me that it\'s very dangerous to pick up other people\'s things on the street. I will follow their advice.