My wife needed a replacement sweater button, so here is the before and after. Button on the left is broken with small piece by its side. Button on the right is 3D printed.
She likes it, my 3D printer has now attained justifiable status!
Designed Sketchup Make 2015.
Printed in PLA on an Ultimaker 2 Extended using Cura default settings.
How I Designed This
Spray painted with plastic paint.
You fail only when you decide to quit learning.