A whole lot of puppy socialization can occur in the house environment - exposure to loud banging sounds, such as clanging pots and pans, vacuum cleaners, washers, garden mowers, etc.
Ask any visitor that involves visit to take care of the puppy all over; touching the paws and sense in between the toes; using the ears; offering restrained hugs; playing with the oral cavity and starting the mouth inserting your finger on the puppy's tongue. If possible expose your puppy to children and show them the way to handle the puppy dog properly. Always make sure when children and pet dogs are playing mutually that they are supervised. You don't want the children to play too about with the doggy and you do not want the pup getting so hyped up by antics of children and becomes uncontrollable.