When thinking about character features in video games, dexterity is generally about doing something swiftly or dodging stuff.
For Ambidexterity, brush your teeth with your non dominant hand.
I either cut my gums, my cheek, or both.
Guitar and magic tricks.
Ideally both at the same time.
Jason Becker used to shred left-handed while yoyo-ing with his right hand
https://m.youtube.com/watch?v=2QOFPADkTlw&pp=ygURSmFzb24gQmVja2VyIHlveW8%3D
Guitar, piano.
Playing a piano can do this because the velocity of each keypress is a big part of the expression, and it’s a scalar value meaning infinite degrees of possible variation.
Definitely piano but most instruments work. Maybe guitar a bit more but not with a pick.
That knife game where you stab the table between your fingers as fast as you can.
Have a look at pen spinning
Air guitar
Boxing
