The long pieces of Styrofoam were used for packaging some electronics. I lined them up with the flat sides facing me and drew where I wanted the arm holes to be cut. I used an exact o knife to cut them out from each piece. I painted them brown. I did not glue them together. When I need someone to act out the stories of Paul and Silas in Prison (Acts 16:16 - 40) or Peter in Prison (Acts 12), the kids or teens can easily get in and out of the shackles as needed.