It's always lovely to get thank-you cards. It helps you feel you did a worthwhile job. I was therefore delighted to find a thank-you card in my office pigeon hole today. It said:
Would it be at all possible for you to visit (name) at the BRI when you have a moment ... Thank you so much.
How can I refuse? So I learn yet another tip. Thank people for things they haven't done yet, in anticipation.