How to destroy a hard drive

[postlink]http://where-to-chat.blogspot.com/2013/07/how-to-destroy-hard-drive.html[/postlink]http://www.youtube.com/watch?v=oNcaIQMjbM8endofvid [s] What to do with a failed hard drive? It was only an IBM Deskstar of 40gb that was not working properly, so we opened it and played with it. [e]