You can boost-up snowman with some LEDs. I recommend 5W led for the body and any type of 3mm (amber, orange,..) LED for nose.
As improvement: Put some small real twig in the right hand of the snowman and piece of cloth for the scarf if you want ;)
For LED version print-out slowly with any transparent fillament, otherwise use just some white plastic. No support needed.
File "coal" is for the mouth of the snowman. 4/5 pieces will be enough.
The author hasn't provided the model origin yet.