Use the stool as a seat, a step, a side table etc. Post ephemera: letters; photographs; notes; postcards etc. Things that are special, and personal. Things that you do not want to dispose off but that are adding clutter to your daily life. Once something has been posted there is no easy means to retrieve it, the stool is sealed on all sides.

Over time the posted ephemera grows becoming more important than the stool, at this point the stool can be smashed open allowing the content to be retrieved. It is not intended that the stool should be opened before five years. The longer the stool is used the more valuable and interesting the contents will be when eventually retrieved by the owner.