Key holder simple trapezoidal shape
To avoid the key holder too rectiline already posted
You can change the name by going to the "openscad" script
Quick printing about 0.5 to 1h
2mm thickness + 2mm letters
2 colors to stop the color of the keyframe at the first appearances of the letters and to change the coil.
Total rendering time: 0 hours, 0 minutes, 0 seconds