These are 3D printed ornaments. They have a small indentation for for a 3mm cube magnet. I designed these ornaments in Photoshop then auto-traced the raster images using CorelDraw. I then imported the resultant DXF into sketchup, made some modifications, then exported to STL for printing on my AirwolfXL.
Step 1: Print and Assemble
Print the following:
Assemble the ornaments. Insert magnets. Hang under mistletoe.