You might be interested to know how we're honoring him today in the rationality and effective altruism communities.
We've set up big red buttons on each site that 100 core users of each site can use to 'nuke' the other site. If 1 of those 100 users enters their launch codes, the other site goes down.
https://www.lesswrong.com/posts/EW8yZYcu3Kff2qShS/petrov-day...