This is a contour map of New York State that I made into a tree ornament.
The map was originally larger. Some of the contour lines get a bit thin at this size. I put a 2mm sheet in the middle of the ornament to stiffen it. This creates some overhangs that can be difficult for some printers. The bottom may wind up a little rougher than the top. There is a hole in the northern part of the ornament to hang it. The .stl prints as a single object.