Okay, here in Spain there is a popular activity for young children which involves punching holes on paper in a pattern, or inside the contours of a shape, etc. They use an instrument that is kind of like a a pencil but has a blunt metal tip, and they have a mat under the paper to protect the table surface. I am supposed to be using English with them, but I have no idea what to call the activity (they call it: picar) or the implement (they call it punzón.) Can anyone help me? Thanks!