while driving, car dash and electronics flicker, then sometimes car just shuts down. seems to be no common denominator that makes this happen. Green key light blinks. most times won't start. checked battery and alternator already.

 

Sounds like it could be related to a Worn out electrical portion of the Ignition switch.. ? Ive seen a lot of Hondas do funky things like that when the ignition switch is worn out

Hope this Helps