The first one is building blocks. The building blocks are bright colors and all shapes, can be optionally packed and disassembled, can change a lot of things. The building blocks should better be of a little small, so the baby and easily grasp and operate. Older than 6 months baby all like play.
The second one is picture book. For the baby, a book also be a toy. From grab a book, to turn the pages, you can see the whole process of fine motor development. Baby older than 6 months will sit and read books.
The third one is ball. The rolling ball, especially the color one will cause baby’s interest. The baby can use a hand to grasp, push, etc. The baby older than 7 months who can crawl can play.
The fourth one is plasticine. Baby can rub, knead, crowd and pressure, make their favorite things. This is one of the indispensable toys which can exercise little finger fine movement, almost all babies love.
The fifth one is bigbeads. A rope through a hole, which requires not only good hand eye coordination, but also need to pay attention. Baby about 2 years old can play.
So, if you want to exercise baby’s dexterity of hands, you can choose the above toys.