Sigh. What can I do? N2 were "fixing" the kitchen. For some reason that involved climbing on top. But they did play together so nicely. They shared the tools. One of them would wear the goggles, do some work and then the other would ask for the goggles and they would switch. Then when they got too warm, they would go take a "shower" which was located in pretty much any door frame. This went on for at least half an hour.