This is a Customizer-enabled version of the earlier luggage label using the fonts available in Customizer.
Just enter your text, tune some parameters and make your tag!
When printing on glass, you can try to print the engraved versions upside down. This way, you get a smooth and shiny top side later. Print bed distance, temperatures and leveling needs to be good for this.
When using the hidden text option, keep in mind the transparency of your filament. Black might not be the best choice ;-)
Higher infill increases contrast.