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Printing and hanging it
Flat ornaments
They print back side down with no supports. The tab's hole is 4.4 mm across with at least 2.5 mm of plastic round it, so it takes a wire hook or a narrow ribbon and won't snap off. Streets and paths are at least 0.8 mm wide so a 0.4 mm nozzle draws them cleanly.
Colours on any printer
Each colour sits at its own height. On a single-nozzle printer, pause and swap the filament at the heights listed after the model builds; each step comes out in its own colour. On a multi-colour printer, load the 3MF and give each named part its filament.
Mini globes
A globe prints as two halves, flat face down. The cap and loop rise from the north pole; the loop's hole is a teardrop, so it prints standing up without supports. Push three 11 mm pieces of 1.75 mm filament into the pin holes, add a drop of glue, and the continents line up.
Where the shapes come from
Streets, water, parks and buildings come from OpenStreetMap, with nothing drawn that runs underground. Relief comes from real elevation data, raised so a hill reads at the size of a hand. The Moon and Mars use NASA and USGS elevation maps.
Map data © OpenStreetMap contributors. Elevation © Mapzen / AWS Terrain Tiles; Moon: LRO LOLA (NASA/GSFC, USGS); Mars: MGS MOLA (NASA/JPL/GSFC, USGS). Want something bigger? Make a map poster or wall plaque, open the TerraPrinter app, or see more 3D map gift ideas.