Simple decoration. parts can print fast.
I printed 6 Butterfly for each string, and then you can choose which ones you would like for the bottom 6 parts.
I used fishing line but I'm sure thread should work too.
I added holes to the snowflake stars to make it easier to fix the line through. I would recommend using knots and maybe some hot glue to keep parts in place once you have decided where you like them.
Also another idea would be to increase the infill on the lower decorations to make them heavier and weigh it down a little more.
The author hasn't provided the model origin yet.