Answer (from Top Contributor): A guy would love to receive a wallet.
With your photo and some token currency of your country for remembrance. He can proudly tell his friends that he receive it as a gift from his long time foreign friend.
He will appreciate you each time he sees the wallet.
He can still keep it somewhere before it gets worn out.
Answer 2: Ask him what size pants he wears and buy him some Lewis jeans.
See original question here.