After being asked to give a few workshops at a local elementary school, we (the kids and one of the teachers) got the idea of converting one class room into a chill room.
The basics, layout and flooring was pretty much a done deal. So with just adding a gaming zone and different chill areas in a friendly color setup, the room became more lively in different ways.
The number of seats and beanbags/hockers are enough to also use it as a back-up classroom for more informal classes or small gatherings.