Great topic! My little trick was a pet call way out in the boondocks that I'd get our car group travel to, but wouldn't actually go up to the door unless there was a "red pickup truck" in the driveway, since the householder told me that's how you could tell if he was home. Of course neither householder nor said pickup truck actually existed.
I thought sisters only had to cover their heads if they were giving a prayer or conducting a study in the presence of a baptised male. I remember my mom calling me up from the basement whilst I was playing video games to say a prayer for one of her bible studies, and I would respond by saying I was in the bathroom. She always had this ridiculous straw hat on just because I was in another part of the house.
FBF