6 months and up: board and cloth books.
7 months and up: cups, balls, empty boxes, stacking toys, busy boxes, toys to push and pull, squeeze toys.
10 months and up: large dolls and puppets. Containers, large blocks.
12 months and up: push toys: shopping carts, wagons, lawnmowers.
Try not to heed the siren call that every toy be “educational.” Does the toy promote exploration? Does it have a cause and effect? Does it promote interaction with others? Check for obvious loose parts and durability. Let common sense prevail. And remember that the older baby might enjoy the wrapping paper and boxes more than the toy itself!