Last minute gift idea... Choose a scale factor based on available printing time!
Here's a toy train based on some of the mid-20th century diesel locomotives, especially the Fairbanks-Morse Erie Built.
I've printed this in PLA (v1 pictured) and ABS (v2 pictured), with a BIG one printing in Wood/PLA right now.
v1 Has reduced detail, which might be preferred for a small scale.
v2 Has some extra detail added.
The source file (modern_diesel_train.skp) has several "half models". Just mirror and scale. The larger portions of the model are arbitrarily scaled, so remember to shrink them down before exporting!
Printer Brand:
SeeMeCNC
Printer:
Rostock MAX
Rafts:
No
Supports:
Yes
Resolution:
0.2mm
Infill:
Your choice!
Notes:
I've had good luck printing these on their rear ends, with pillars to support some of the overhangs.