If you are worried about somebody who has become addicted to CW, this key might be of help.
First buy an ordinary plastic mousetrap.
Cheese as a bait works fine for mice, but for CW operators another kind of bait is needed: a telegraphy key.
See picture how to construct the key.
Looks tempting already.
Morsetrap loaded and ready to snap an unsuspicious CW operator. A very light touch on the key is safe, but the trap will spring if pressed more heavily.
See & hear a video clip:
