There is a good intuition here. The arts, too, once served a primarily communal function. Most of the steps that later became the ballet are drawn from folk dancing, which at one time was common to all communities.

In Tokyo sometimes, you walk through a neighborhood where the people have blocked off an intersection for circle dancing in a relatively simple style.

Maybe the easiest thing to get tech people to do would be live CounterStrike. One half of the office is "guarding the VIPs", the other half is rescuing the hostages. People spend hours and hours on these kinds of games as it is. Bringing it into the real world would harness some of that engagement for health and community.