Ключевые слова: background, black, black box, blank, blank black box, box, business, cardboard, carton, case, concept, confidential, container, content, craft, crime, criminal, cube, curiosity, danger, data, delivery, dengerous, empty, forbidden, geometry, gift, hide, isolated, mock up, mysterious, mysterious black box, mystery, mystery black box, package, packaging, parcel, present, privacy, rectangle, restrictions, secrecy, secret, shape, shipping, space, storage, surprise, symbol, thief, topsecret, treasure, warning, wood, wooden, wrap,