When a ghost gives you second sight for Christmas.  From Jimmy Takes Vanishing Lessons by Walter R. Brooks and illustrated by Don Bolognese.

From Ontario College of Art's Sketch magazine, 1949.

From Granny's Wonderful Chair and Its Tales of Fairy Times by Frances Browne and illustrated by Katharine Pyle, 1916.

At first glance, we thought that this Santa was sporting wings and a halo with chimneys in it.  Then we realized that any depiction of Santa without wings or a chimneyed halo is fake news.  From Short Stories for Little Folks by Catherine Bryce, 1910.

From The Goblin, 1922.

From The Goblin, 1928.

"'Flying Christmas Trees' spotted."  From UFO Newsclipping Service, 1973.

From The Strand, 1907.

From Judson's 1981 yearbook.

"Ever since Christmas was ruined, the kids' sorry energy has been coming in smoothly!"  From Kyoryuger episode 42.

From When Fairies Were Friendly by Evaleen Stein, 1922.

From St. Joseph's 1981 yearbook.

From The Pixie in the House by Laura Rountree Smith and illustrated by Clara Powers Wilson, 1915.

Christmas is a dreamy time ("I'm Dreaming of a White Christmas," for example.)  But is the classic imagery nightmarish?  We consulted an old book of dream symbolism, The Gates of the Future Thrown Open by Carlotta de Barsy (1899):

Reindeer are auspicious:

However, sleigh-bells are inauspicious:

Santa being a stout person is auspicious:

That his beard is white is auspicious:

Snowflakes are auspicious:

The singing of carols or hymns is inauspicious:

A fire in the fireplace is auspicious:

With only three of these nine symbols being inauspicious, Christmas is two-thirds a sweet dream.

From Purple Parrot, 1935.

From The Johnson Journal, 1946.

From Lighted Pathway, 1981.

From Short Stories for Little Folks by Catherine Bryce, 1910.

"So this is a Christmas tree?"  From Gokaiger episode 44.

From Truth or Dare, The Book You Can Play by Bob Moog, Erin Conley, and Jenny Brennan, 2001.