This tree decoration has captive print-in-place ornaments. Once printed they twist loose and rotate freely within the boughs of the tree.
See here for video: https://youtu.be/iUhaGNJOFGk
This design is particularly suited to printing with multicolour filament as rotating the ornaments allows for visualization of the different filament colours.
This model features the tricolour “Silk Red & Green & Blue” filament by Eryone.
This is an advanced print requiring a well calibrated machine and quality filament. Good layer adhesion is important.
Print the tree upside-down with the top portion fully supported.
Once printed, allow the print to cool. Wiggle each ornament back and forth until it breaks from the small internal supports. Twist it a few times until it turns smoothly.
If an ornament does break off while twisting it loose, you can just glue it back in place.