Peter Mead suggests some starting points from which the creatively-challenged preacher might approach the message of Christmas:-
Prophecies from the Old Testament such as Isaiah 7:14, Isaiah 9:6, Micah 5:2, or Jeremiah 31:15.
People from Matthew’s genealogy – the women, for example (each of whom has an interesting story to tell!), or the Gentiles (suggesting the greater scope of the Christmas hope).
Themes – the ‘Immanuel’ (God with us) theme, for example, beginning with Isaiah 7:14-9:7), continuing with Matthew 1, and then moving on to Matthew 28:20.
Passages other than the usual ones at the beginning of Matthew and Luke, such as John’s Prologue, Gal 4:4, or Titus 2:11-14.
Titles of Christ, such as Jesus, Immanuel, King, and so on.
Carols – while the theology of some carols is questionable, some (‘Hark the Herald Angels’, for example) encapsulate lofty themes and doctrines.
Contemporary themes could be explored, such as giving, peace, family, goodwill, and so on.