I've done drawings, but not IN therapy, and only when it seemed to me that it would be helpful in conveying what's going on with me. They weren't trauma-related.

More often I have brought writing to therapy. I express myself better in writing than I do verbally. Very rarely I have written something down IN therapy when I just couldn't bring myself to say it out loud, but I don't see this as the same thing.

As someone who tends to make powerpoints and spreadsheets for absolutely everything, there are times when it has been tempting...

(Have you read A Visit from the Good Squad? There's an entire chapter in powerpoint.)

ETA: so perhaps to get closer to your point, I've used alternative modes of expression when *I* have deemed them more useful, but my T hasn't asked me to express something in any other way himself.