Introduce yourself to new ward or branch members and go out of your way to sit by them in classes and sacrament meeting.
Make an effort to remember their names.
Priesthood leaders and members of the Sunday School and Relief Society presidencies can invite new members to introduce themselves before the lesson begins.
Offer to assist newcomers in moving in and becoming familiar with the area.
Invite them to ward or branch activities.
Be a friend! Continue to become acquainted with new members in the ensuing weeks and months.