Need ideas about useful things to do during specific night shift
I've also googled same question, but all the answers I've found suggested reading, training etc, all of those are not allowed in my conditions. So I'll explain my situation. I'm in the mandatory military service of my country. Formally, I'm guard-security of the important department-building. Basically, I've to stand alone at the car-parking entry barrier outside the yard. Almost no cars are entering during the night.
Talking, eating, sleeping, sitting, reading, phone/music, smoking, toilet during this so-called "watch" is forbidden. So basically, only thinking is allowed.
What can I do to be useful? I stand there for 2 hours, after which replaced by another soldier, after his two hours, I replace him etc.