When I was a kid, I used to practice the Vulcan sign as I was lying in bed waiting to fall asleep. There was a bit of light from my bedroom door so I could hold up my hand and see the outline of my fingers.

\\//_

Then that got too easy so I tried other combinations:

\||/_

\\\/_

\///_

Then I would see how fast I could switch from one position to another.

Then I tried it with my right hand (which was harder because all my muscles were built up in a certain way from all the writing I did.

_\\// (etc.)

Then I practiced switching from one position to another doing both hands simultaneuously.



I never fell asleep very quickly when I was a kid so I had a lot of time on my... hands.