Any play offers learning, your child's toys are tools. The best way to use the toys is to be aware of their limitations. They can improve the development, but can never replace the contact with parents.
Many of the best toys is already within in your home, are house hold items, in general daily use. One child of 1-2 year of age, for example, plays and learns from various objects found in your kitchen: measuring spoons, cups, pots or plastic basins. When the baby can walk, save some of these materials in the entertainment box or cabinet, where can reach them without your help. Do not throw away any boxes clean, including cylindrical boxes of cereal and of toys that come store, in general the baby will find the boxes more interesting than the contents.