I was above dealing with non-unsolicited goods, and I said in respect of the package that she should '...contact the sender (if known/identifiable) ...'. But as the sender is clearly not identifiable, your friend could not report the misdelivery to the sender, or indeed to anyone else who is 'interested'. So, as far as she is concerned (and ignoring the 'wrong name' which might not even belong to a real person), the goods were unsolicited and can, in my opinion, be retained/disposed of as she thinks fit (as the law allows). I hope she enjoys her windfall, whatever it may be!