Counting fingers seems like a good idea - because even seeing your hands can cause some strange effects (for me anyway)
I tend to check for the small scar on my hand, and if my hand looks 'normal'
Then I question what I ate last, and how I got there (wherever 'there' is). If I can't answer those Q's, then its a dream.
Then if I feel extra energetic about it - I block my nose and breathe...

I used to have a whole lot more, but got lazy