You will need to dress infants and most toddlers. You will find that some toddlers would prefer to "do it myself." Most toddlers and preschoolers still need some assistance in zipping zippers and buttoning buttons.
Preschool children enjoy making choices. You can help them choose sock colors, possibly outfits or what to wear in their hair or on their head.
A few preschoolers will learn to tie their shoes before they reach kindergarten age.