For this project any wood offcuts are suitable. I used maple 1" tall pieces. Use 60 or 90 deg V-Bit for best carving results.
Measure the material and place a rectangular shape oversized byy 1/8" in each direction over the size of the stamp you want. Start with a single stamp and widen the background as you add more stamps - it's easier to batch the process out.
Open Pro Design Library and find some shapes you want to make stamps of. Place them as Fill cuts on the canvas, and set cut depth to 0". Move the over the previously created background and place center to the material. It helps to Group the resulting shapes coming from the Pro Design Library.
Once carved cut the stamps into separate pieces. I used a flush cut japanese style saw, but a small hand saw or even osciallting tool would be good too. Sand lightly - watch out for smaller features - and dip in ink or paint over with markers to start stamping.