"Chip off the old block" is a phrase commonly used to describe a child who bears a striking resemblance to one or both of their parents, either physically or in terms of their personality traits. Some alternative phrases that can be used in place of "chip off the old block" include "apple doesn't fall far from the tree," "like father, like son/daughter," "spitting image," "kindred spirit," "clone," "mini-me," "mirror image," "double," "carbon copy," "replica," and "doppelganger." These phrases convey the same idea of a child resembling their parent(s) in some way and can be used interchangeably with "chip off the old block".