I know someone here told me about Jean Leader's annual advent calendar, and there have been 2 free patterns so far. 

https://jeanleader.net/calendar/index.html

Someone just posted to reddit about a German one that was new to me. Today's snowflake is a nice simple one (the 8th is when I'm posting this).

http://www.kloeppeln-in-sachsen.de/

The German one threw a security message but I got the PDF and it's fine. 

Edit to add: the Danish Christmas ornament free pattern:

https://birkely-kniplinger.dk/