O Vibro-Tannenbaum!

I’m not such the Christmas Tree guy, but many of you are (statistically speaking), so I submitted for your consideration: The Christmas Tree Vibrator (a phrase that I otherwise *DO NOT* suggest googling without SafeSearch firmly in place).

Christmas Tree Vibrator: Odd invention aimed to shake up your holiday tree

This 1947 patent for a “Christmas Tree Vibrator” turns out to be more confusing than risque.
The inventor, Leo R. Smith, argued that a vibrating tree was a way to make ornaments look prettier. The vibratory unit “for attachment to decorated trees” would “transmit a highly pleasing two-dimensional vibration thereto without interference with the decorations.”