Harrison's Stolen Christmas Present

Harrison is my 14-year-old son. He was taking a trip to Toronto to visit family and had his wallet stolen from the movie theatre when he went to the bathroom. 

His wallet contained ALL his Christmas presents: a whopping $500. 

I can't possibly give this back to him, because I'm a single mom. And he's so mortified that his family will be mad at him because he knows it's a lot of money. He said, "I'm still kind of a kid, and $500 is a TON of money".  He said that "he can't trust anyone, anymore", but I'd like to show him that people are GOOD and are willing to help out. 

Thanks for any help you can offer. We appreciate it!