I love the note he holds up! I could use one of those notes from my T...

Ask your T to do such a note before you need it so that when you do and you're at your most vulnerable you don't have to to stop and explain it all to him. You deserve that comfort. We all need it! But because of boundaries the actual thing is not available in its physical form but at least if you can know T is hugging you in his thoughts you won't feel so alone. If you are shy to ask him to do such a thing (as I often have been) try writing him a note that you just pass to him at the beginning of the session or drop off at his office prior to a session. That has been my strategy. lol