That's it--Calvin's got it. "What? What are you concerned about?" I guess you'd have to call it innocence, though it seems like beyond even that.
OF COURSE he's unravelling an entire roll of toilet paper. Of COURSE he's eaten three strips of masking tape, and then chewed a hole in his bed. Those things are nearby, aren't they? What do you expect him to do? NOT eat the masking tape? WHERE WOULD BE THE FUN IN THAT?