This is a remix of https://www.printables.com/model/253408-customizable-lego-compatible-text-brick-key-fobs
While the original creates a perfectly fitting LEGO brick, the ring to which you attach a keyring lies flat on the print bed. This did not work for my use case, so I created a remix, where the ring is vertical. This allows attaching a keyring and still stacking the keyfob onto a baseplate.
For detailed printing instructions and adjustments of the customizer please take a look at the original model.
This download includes a .SCAD file to create customized 3D printable models. By setting some simple parameters from drop-down boxes and sliders you can easily create your own customized model.
You will have to first install OpenSCAD (free software) on your own computer to process the .SCAD file and present the customizer parameters. Download OpenSCAD and get started. For further details on running the customizer see DrLex's instructions on How to Run Customizer on Your Own Computer.
The author remixed this model.
The ring for attaching a keyring has been turned by 90 degrees. This allows easier stacking of multiple keyrings.