Family Edition Our building sets will stimulate the spatial thinking, fine motor skills and help develop hand-eye coordination in your children. Pieces easily snap together and are designed to withstand rough play. smooth edge can protect the toddlers and easy for them to grasp it,Engineers Start Here! The construction gift work great for toddlers or preschoolers, even adults can have fun too. Engineering erector sets for boys or girls toys. Manipulatives for kids are good for the little engineer, fort builder or undirected pretend play. Use the building for kids toy sets for fine motor skills, color recognition, pre-math skills, occupational therapy tools, alternative to screens!