I'm an MS teacher and it has us ending the year on a low note. On the one hand it's nice to have less structured time with some students to talk, etc. And of course great for some kids to have that time with each other.
Unfortunately the majority of kids in my school can't seem to handle 90-minute class periods of mostly down time. The teachers I know who've planned cool non-computer-based activities (paper airplanes, Rube Golberg machines, writing comic panels, etc.) are finding them falling flat with most kids as they remain on phones or otherwise refuse to participate. Staff with planning periods have to be out in the halls as monitors because so many kids are just running around looking for mischief. Just one of many examples: today a couple of kids took chocolate milk from the cafeteria up the main stairs, opened it, and threw it over the edge so it splashed on a wall and then all over the main hallway floor.