Give a kid a new toy -- almost any toy -- and chances are, you've got a happy kid. Young children generally aren't fussy when it comes to baby toys and kids toys, but parents should be.

Toys are more than just playthings, though, and while they should be fun, they should also be age-appropriate, stimulating, and safe. "Play is so important in the social, mental, physical, and emotional development of children," says Vicki Panaccione, PhD, a child psychologist and founder of the Better Parenting Institute. "Toys should be thought of as developmental learning tools."