It was boring, unchanging, the same grid with white panels every single day. The only mildly interesting thing the little dots or holes in them, which were made in some identifiable yet random patterns.I couldn't move though, so I always saw it from the same angle, in the same place. The thing itself is not very interesting, even when it's weird square starts making a silent buzzing noise and it's four little flaps move up and down. Other than that the only other change was when the long tubes lit up and then were dark again. They'd be light most of the day. I couldn't even see all of it though, which is the annoying part. There would always be tables and chairs in the way, and people and bags, obstructing my view. But in a way they are more interesting than the circles in the thing. There are three types, the smooth ones, the smooth one with little dots, and the big one with with the net pattern in the center.
I was describing the ceiling from the perspective of the floor.