Why not choose building blocks for your child to build whatever they want? Choose toys that stimulate your child's mind. PicassoTiles 63-Piece Magnetic Diamond Building Blocks Set with Car Truck. This magnetic building set can be used as a complete play set. It can also be used in combination with other Picasso track tiles. The Magnetic Diamond Building Blocks Set will immerse the little ones in endless creative play. Recommended for children aged 3 years and up.