A playset-house with a character included, many windows and doors, each with its own closure, to experiment with different activities related to manual skills. With wooden elements and many mechanical activities it stimulates sensoriality, hand-eye coordination, understanding of cause-effect relationships and logical reasoning. The game, inspired by Montessorian pedagogy, is a real gym for refining the fine movement of the hand, teaching in the meantime to use commonly used objects: inserting and turning a key, opening sliding doors, unlocking simple locks, discovering from time to time new rooms of the house. A classic Montessori lock box game, revisited with the unmistakable and empathetic Baby Clementoni design. A project conceived in Italy and suitable for stimulating the senses of the little ones.