When I saw this question, I thought of a song my parents used to sing (Tune of "The Old Oaken Bucket")
The old family toothbrush, the old family toothbrush, the old family toothbrush, that hung by the sink. First it was Father's and then it was Mother's, and then it was Sister's, and now it is mine.
The toothbrush wasn't passed down, but the song was. I wondered where it had come from. Google led me to this interesting story:
In the 1920's and 1930's, the most eagerly awaited event of the Palm Beach social season was the annual celebration of E.T. Stotesbury's birthday on February 26. The hundreds of people who filled the courtyard at El Mirasol on this festive occasion could always count on certain hallowed traditions. One of these was that Mr. Stotesbury, after cutting the big cake and accepting many fond toasts, could be prevailed upon by the crowd to regale them with "The Old Family Toothbrush." With Meyer Davis and his orchestra providing accompaniment, Stotesbury would sing, and the guests would join in the chorus with a gusto that probably made the palm fronds quake.