This type of toys makes a positive effect on the development of children. They activate thinking, imagination, logic and fine motor skills of hands. And also these wooden mechanical models for modeling affect adults. They calm the nerves, stabilize the emotional balance and train the memory. I advise you to follow the WoodTrick website. You will find an impressive number of offers for an interesting and useful pastime there. These products are the result of the thought of professional engineers, by the way.