I wanted a small fast to print dog whistle because I'm always loosing them.
This whistle comes out at 30mm, plenty loud enough for my needs and sturdy enough in ABS or PLA.
Edit: Added a second version with small tooth grips in the top
Edit: Just had a play and scaled to 75% and .08mm layer height... it works! Even teenytinyer and better for indoor training with it being a bit quieter.
Supports - Only touching building plate