Search the seasonal plastic section of your local dollar store for stamping tools for printmaking. I found this paper plate holder with this circular pattern.
The beauty of printing with the gelatin and glycerin printing plate is the great detail is possible with just hand pressure for printing.
Use the thin layer of ink on the plate to ink the tools. Press the stamping tool into the thin layer of ink, transfer the thin layer to the tool and then print it back on to the plate.
Then place the print paper on top and burnish. All with just hand pressure.