1. Introduction -- I. Cognition and material culture. 2. Rethinking the archaeology of mind ; 3. The material-engagement approach : a summary of the argument -- II. Outline of a theory of material engagement. 4. The extended mind ; 5. The enactive sign ; 6. Material agency -- III. Marking the mental : where brain, body and culture conflate. 7. Knapping intentions and the handmade mind ; 8. Thoughtful marks, lines, and signs ; 9. Becoming one with the clay ; 10. Epilogue : How do things shape the mind?