How do I have a room that starts afresh each new participant?

Hi I'm looking to set up a room where the activity structure is locked and people can come in, from a link in a book, and do the activities by adding post-it notes etc, but then when they are finished the room resets, so there's no messy post-its left for the next visitor. How do I do this? I need the room to be open 24/7 indefinately as it would be published in a book.