Honeycomb snowflake Christmas tree decoration

≈55mm (2.1in) radius, 4mm height, you'll need a rope to hang it.

78 minutes print on my handmade prusa i3 with 25% fill, 70mm/sec speed, 0.1 layer hight.

SketchUp file included, so you can easily scale or otherwise tweak before printing. Otherwise just throw .stl to your preferred slicer (I prefer Cura) and print.