Great idea Giordano! I know my jw reverts more to his authentic self when we can get away. Hiking, fishing, boating, bonfires, etc... Not talking about anything jw helps enormously too. Being in nature he seems to be less judgmental in general. It lasts for quite a while until the next meeting of course. Then it is back same old....
Even if you don't like an activity that he does do it anyway. Anything to get them out of jw mindset!