Bose Cube Desk Tidy By AlanL100 in WorkshopCNC184Introduction: NullBy AlanL100plus.google.com/1060593595433165Follow More by the author: About: Retired University Lecturer in Graphic Design. More About AlanL100 » The Bose Cube just sits on the base tray but the tray can be used with or without the Cube. The Phone Holder can slot into the top section of the Cube or into the base of the tray.