cpx-xmas-ornament
This is a noisy, shiny Christmas ornament.
The code should run on most Circuit Playground Express boards.
There are several MML versions of Christmas carols.
https://en.wikipedia.org/wiki/Music_Macro_Language
https://visionshome.guildlaunch.com/forums/viewtopic.php?t=11312319
https://archeagemmllibrary.com/we-wish-you-a-merry-christmas/
You may want even more. I'm not sure how many will fit on the board, but they're small, so feel free to create your own favorites.