I designed and printed this curved-tip darning needle at the request of my daughter.
After several iterations and small adjustments to the shape and curvature, she is now very happy with the final result.
The curved point works well and makes the needle comfortable and practical to use.
 

The print came out strong and precise. Printing with 100% infill gives the needle enough strength for its purpose, and the details are clean. Supports were needed because of the curved tip, but with tree supports the removal was easy and the surface finish remained good.

Print settings used:
Material: PLA
Infill: 100%
Walls: 1
Infill pattern: Rectilinear
Supports: Yes
Support type: Tree (Auto)
Overhang threshold: 40°
Supports on build plate only: Off

Length: 75,79mm
Width wool end: 6mm
Width curved tip: 1,08 mm 
 

Safety and success factors:
Supervision: Always provide supervision, especially when used by young children, and ensure you know how to correct mistakes or address issues if they occur.