I know these keys are pretty simple but, it was fun to be able to model them quickly in Nomad Sculpt and, 3D print them. They are printed in a nylon resin and, sprayed with a metallic coat, then weathered with acrylic paint. I made these to use as toggles on a drawstring bag I made.
There is a 3 minute video about making the bag:
… and, a related post with more photos on my blog: