I've just discovered your gnome stories. I love them. Great ending on this one - the humans have no idea. Reminds me of three cats I used to have. I'd trained them to stay off all tables and counters, but whenever I returned home I would hear three "thwunks" as they jumped down from whatever forbidden place they'd just been.
It was more like a skip, but the first hop was definitely a leap. A big one too. was a particularly funny line.