Phễu/Dụng cụ cạo băng kính chắn gió

No supports needed. Use it as funnel for windshield liquid, as I always end up spilling liquid over the motor internal parts. :)

This is big, 14 cm in diameter, to clear faster the windshield. 

Print the optional ice scraper. ( with ice breaking pins upside )

I did it based on a commercial product which seems to be appreciated. I tried to make it strong and thick. My choice of settings are: 0.2mm layer height, 3 walls, 4 top/bottom layers, 30% adaptive cubic infill. 
Use a big brim, to be sure it sticks to the bed till the print ends.

This is one review I've found on Youtube.