Do you ever do any fun team building activities? Either by team or department. My advice: work pays for it, it's done on work time during the work day, find a good well-reviewed non-dangerous not-too-physically-demanding (secretary ass) team-building clinic, and do that for 2-4 hours. End by 2pm.

Then let everyone go home early for the rest of the day.

If you are really crazy take them out to a happy hour.

I mean it really sounds like even if the storm has blown over there has been no "Thank you" or acknowledgement that things were shitty. There is just this expectation that things are getting better and going to keep getting better and cool, that should be enough.

My company gives us a budget every quarter for a "fun day" or "fun activity" that we get to do on work time. If we can spare it every quarter despite a general lack of any kind of work crisis or shittiness, then I think you could see the value in doing it at least once after a prolonged period of stress.

Just don't pull a Michael Scott at the Dundees. Or the coal walking bit.