Isn't it something how they NEED this sort of thing?
My H's coworkers have sometimes commented on his lunch. I don't know if they have ever noticed his notes, though.
It seems to me that by changing your behavior just that little bit, made him do something different. I mean the playing around in the kitchen is just what you wanted and you didn't even have to ask for it. How does all that make you feel? Pretty good, I bet.