This is a simple tag that attaches to the bottom of a U.S. automotive license plate. Use the customizer to add whatever text you like. The OpenSCAD code is also include if you prefer to use that.
If your printer supports the M600 filament change command, you can use the Prusa
color change page to do a two color print without having a multi-color printer. The base plate is 1mm, so I set it to change at 1.2mm to get the black and white example in the photo. https://www.prusaprinters.org/color-print/
In the customizer you can use whatever text you want, just use the offset value to
center it. There are a few different fonts to choose from that don't exceed the