Lets look at a history Morse Code Keys, sounders, and devices invented/developed over the decades
Morse, Morse Code, morse keys, telegraph keys (morsemad.com)
Telegraph-History (telegraph-history.org)
Sparks Telegraph Key Review (zianet.com)
PA3EGH – De website van PA3EGH
A COLLECTION OF MORSE TELEGRAPH AND RADIO RELATED ITEMS FROM THE RADIO STATION OF M6BRN
Morse Key Collection of Thomas Andersson, OH6NT
Current manufacturers of Morse (CW) Keys, paddles, bugs etc.
LED UTC Ham Radio Clocks | Mini Morse Keys & Paddles (electronicsusa.com)
KENT Morse Keys (kent-engineers.com)
Now, What about Learning Morse Code and start to use these devices “On The Air”
ONLINE CODE PRACTICE AND STUDY MATERIAL (hamuniverse.com)
