Poppy Crafts Stamps 157 - 3.5"x3.5". Make a great impression with these Poppy Crafts stamps. Clean, clear, and easy to use! These stamps can be used with all sorts of mediums including paper, card, mdf etc. Ready to mount on an acrylic block the stamps can be used with ink pads, paint, or used with pigment and embossing powder, each sold separately. They are suitable for any other surface depending on the ink choice.