Carter Bays, Dec. 31, Maui. Cox’s non-pro; Bays is co-creator and exec producer of “How I Met Your Mother.” Births: Addie Morfoot and Ross Kauffman, a boy; Harry Samuel Kauffman, Jan. 13, New York. Mother’s a contributor to Variety; father’s a director and producer. Laura Myones and Andrew Ruf, a boy; Ascher Francis Ruf, Jan. 13, Los Angeles. Mother’s a partner at McKeon Myones Entertainment; father’s head of motion picture finance group at Paradigm. Melissa Little Padgitt and Jason Padgitt, a girl; Addison Riley Padgitt, Dec. 13, Los Angeles. Mother’s senior publicist for “The Ellen DeGeneres Show”; father’s senior veep of marketing and communications for guitarmaker Fender.