We also celebrate a week off as collective, called Sabbath week. It's pretty fun to hear the stories of adventure and leisure as everyone returns in high spirits ready to work hard for the upcoming season of work.
In moments of celebration, we shoot confetti cannons.
Each year, we retreat.
Why? Because it's what you make a habit of that defines you. Or, since someone more famous already said this more eloquently:
“You are what you repeatedly do.” - Aristotle
What applies on a personal level applies at a team and community level. If you're a leader in your organization, what rituals are you establishing to reinforce desired culture?
Policies don't drive performance, culture does. Rituals are the structure culture builds around.