Fun topic!
My T has her books color-coded on shelves. I told her that I'd have to have mine alphabetized. And then a few sessions later, she stood up, looking for a book to lend me, and she couldn't find it because they were all color-coded!

She eventually gave up trying to find it.
This week, I told my T how I'd like to try yoga but feel very self-conscious doing it in a class - she suddenly pulled up her pant leg and showed me a scar on her shin - she said, "I'm an idiot" (and I wanted to say, "No, you're not, T!), then she explained that she's a big yogi, and she was doing a yoga handstand in her home but fell and hit some furniture and cut her leg - oh, we were laughing at that! And it felt really nice that she shared that with me.