I don’t think I am going to have time to do it now :( but I was thinking of mimicking lighthouse keepers routines.
There were always three keepers on an island and they would work in 4 hour shifts keeping watch. On the late night and earlier shifts there was an unwritten rule that you woke the next keeper up just before their shift and would make them a cuppa and sit and chat for 20 minutes or so to make sure they were awake. I wanted to do something around those late night conversations but had not fully formed the idea.