You probably can't convince him, peer pressure is going to win out at that age. Best I think you can do is emphasize working (at 12, allowance or chores) to ea

You probably can't convince him, peer pressure is going to win out at that age. Best I think you can do is emphasize working (at 12, allowance or chores) to earn the fancy things you want, and not caving yourself to the demands of his friends. He might be disappointed, but its not his money.