I'm still really interested in the relationship between keeping MC's message as a sort of transitional object, and your T's struggle with transitional objects. It might be a clue to why he didn't want you to play it?

He wants to be a facilitator between you and your outside life, and not have too an intense a capital R relationship like in psychoanalytic analysis or attachment theory.

I do think he is trying to stretch there, toward you, but it isn't innate to the way he conceptualizes his overall practice with clients.

Just a side note, my T is a whole lot like yours, but I don't push him as much - like I just wouldn't dare ask for an object , lol.

He seems to have a genuine interest in and regard for you.