Comment by Joker_vD

Now I am imagining a typewriter with just two huge round buttons, next to each other horizontally, and a spacebar bellow them:

     *-----*      *-----*
    |       |    |       |
    |   ●   |    |   Ω   |
    |       |    |       |
     *-----*      *-----*
     
      [================]

A press of each round button rotates the typing ball accordingly, pressing the space prints the chosen letter and resets the ball to the neutral state. This whole thing should probably be electric lest you'd have to press the space bar by smashing it with both fists.