I watched this unfold at daycare this morning, about waist-high to me...
Nate: Hi, Katie! Where have you been?
Katie: I was at my house.
Nate: I missed you so much! After you put down your jacket, I want a hug.
She puts her jacket in the cubby and he follows her to that side of the room. They hug.
Dropping the kid off has its rewards :-)