This version of the luggage tag allows a user-defined image for the back, so you can use anything you want and it will be embossed.
Use a black-and-white PNG with only thin white areas for the best results. I included za.png as an example and pictures of the end result.
The text has also been fixed so it will auto-scale if necessary.
You can thread anything through the hole - I use a tag attachment rubber thingy I got from an airline.
UPDATE (1 April 2019): I added a v2 SCAD file with a slightly different approach to emboss the rear image (no differencing - just placing the surface into a pre-sunken space). This is hopefully cause fewer issues.
Da Vinci PLA