Very simple handle for creating your own stamps. These are blank on purpose, you'd bring your own designs to it.

The pictured examples are printed in PLA. The dies were cut from 2mm foam rubber and are just glued on with double sided tape.

The FreeCAD file has all the important parts parametrized. Open the .FCStd-file and find "Spreadsheet" in there. There you can enter any dimension you would like to change.