The most amazing time of your baby's life is his first year because there are a lot of developmental changing, especially for the senses of sight, sound and touch. You, therefore, have to choose appropriated toys for him to stimulate these senses during his playtime.
Toys that can serve this purpose should be colorful, textured or having various kinds of sounds.
Here is a guide to choose best toys for your baby, from birth to 1 year olds :
1) Sassy Ring O' Links Rattle Developmental Toy
2) Lamaze Musical Inchworm