Going back to mepal’s story, there’s a similar one from way back when….
A man was going to Russia with his wife to bring religious articles (seforim, yarmulkas…) to the Russians there who wanted to learn more about Torah and Yiddishkeit. In his suitcase he had 4 pairs of tefillin. The Russians stopped him and questioned him about the tefillin – asking about their uses. So he said “well, one is for me for the week, and one is a special one for Shabbos.” So they asked, “and what about the other two?” So he replied, “my wife also needs, no?”