Gambling is one of the ways.

I don't know if you have noticed from the OP's signature but you just advised a 13 year old to gamble....
Not quite sure if that was a good advice.

Are you sure he's really 13? Anyways I also suggest gambling Grin

No, not really but I will have to take his word for it Wink

Anyways, I would advise signature campaigns and faucets.
When he get's older then yeah, I would advise gambling and lending.