Ds (15) won a prize at school. It was £10 gift vouchers. It was attached to certificate with paper clip. When he got home he found he had actually been given £15 as 2 of the £5 vouchers were stuck together.
Just interested to know what your teen would do. Would they ask your opinion? Would they keep it or give it back?
As I said, just interested, not Mrs Judgeypants 
It threw up quite a moral discussion last night.