I think it would be fine to give a T a card or a gift. I have seen gifts in my T's office from other clients. I personally wouldn't give him either, but I don't know exactly why. Maybe I would be afraid that he wouldn't accept it?? I don't know. I also have read that some T's won't accept gifts or cards or even letters, as they want the client to verbalize their feelings with them and a gift or a card are a way around that. I think it really depends on the particular T.