I can tell you - they (kids - especially teens - I have 3) would appreciate money. My kids love tha tmore than anything from relatives.

No one can possibly know their taste in clothes or music, so thoise are non-starters. Gift cards are great too.

The thing they love most about Christmas is spending the day at the mall with their friends between New Year's and Christmas, power shopping and bargain hunting with gift cards or cash they got for Christmas. They are very proud of themselves when they come home with $10 jeans, or 2-for-1 sweaters, etc.

So, it's not the money so much, but it's what they accomplish with it afterwards that they love.

FWIW.